20 POINTS PLSSSSS
PLS IM BEGGING ILL GIVE CROWN!
ANSWER PLSSS FOR MY FINALS!

A soccer team sells T-shirts for a fundraiser. The company that makes the T-shirts charges 10 per shirt plus a 20 shipping fee per order.


a. Write and graph an equation that represents the total cost (in dollars) of ordering the shirts. Let t represent the number of T-shirts and let c represent the total cost (in dollars).


Equation: c (x) = 10x + 20


PLS MAKE THE GRAPH TOO


HAPPY SUMMMER

Answers

Answer 1

Answer:

see below

Step-by-step explanation:

See attachment for the graph.

We have the equation:

c(x)=10x+20

The slope is 10

The y-intercept is 20

Hope this helps! :)

20 POINTS PLSSSSSPLS IM BEGGING ILL GIVE CROWN!ANSWER PLSSS FOR MY FINALS! A Soccer Team Sells T-shirts

Related Questions

Given f(x, y) = x6 + 6xy3 – 3y4, find = fr(x, y) = fy(x,y) - =

Answers

[tex]f_xy(x, y) = 18x^5 + 18y^2[/tex] derivatives represent the rates of change of the function f(x, y) with respect to x and y, as well as the second-order rates of change.

[tex]f_x(x, y) = 6x^5 + 6y^3[/tex]

[tex]f_y(x, y) = 18xy^2 - 12y^3[/tex]

[tex]f_xx(x, y) = 30x^4[/tex]

[tex]f_yy(x, y) = 36xy - 36y^2[/tex]

[tex]f_xy(x, y) = 18x^5 + 18y^2[/tex]

To find the partial derivatives of the function[tex]f(x, y) = x^6 + 6xy^3 - 3y^4,[/tex]we differentiate the function with respect to x and y separately.

First, let's find the partial derivative with respect to x, denoted as ∂f/∂x or f_x:

f_x(x, y) = ∂/∂x[tex](x^6 + 6xy^3 - 3y^4)[/tex]

         = [tex]6x^5 + 6y^3[/tex]

Next, let's find the partial derivative with respect to y, denoted as ∂f/∂y or f_y:

f_y(x, y) = ∂/∂y ([tex](x^6 + 6xy^3 - 3y^4)[/tex])

         =[tex]18xy^2 - 12y^3[/tex]

Finally, let's find the second partial derivatives:

f_xx(x, y) = ∂²/∂x² ([tex]x^6 + 6xy^3 - 3y^4[/tex])

          = ∂/∂x ([tex]6x^5 + 6y^3[/tex])

          = [tex]30x^4[/tex]

f_yy(x, y) = ∂²/∂y² ([tex]x^6 + 6xy^3 - 3y^4[/tex])

          = ∂/∂y (1[tex]18xy^2 - 12y^3[/tex])

          = 36xy - 36y^2

Now, we can find the mixed partial derivative:

f_xy(x, y) = ∂²/∂y∂x [tex]x^6 + 6xy^3 - 3y^4[/tex])

          = ∂/∂y ([tex]6x^5 + 6y^3)[/tex])

          = [tex]18x^5 + 18y^2[/tex]

In summary:

[tex]f_x(x, y) = 6x^5 + 6y^3[/tex]

[tex]f_y(x, y) = 18xy^2 - 12y^3[/tex]

[tex]f_xx(x, y) = 30x^4[/tex]

[tex]f_yy(x, y) = 36xy - 36y^2[/tex]

[tex]f_xy(x, y) = 18x^5 + 18y^2[/tex]

These derivatives represent the rates of change of the function f(x, y) with respect to x and y, as well as the second-order rates of change.

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00 (a) Compute 84 of 5 10n3 n=1 (6) Estimate the error in using s4 as an approximation of the sum of the series. (l.e. use Soos f(c)dx > r4) (c) Use n = 4 and Sn + f(x)dar < s < Sn+ n+1 ។ f(x)do to

Answers

The sum of the series is 22450. The error in using S4 is infinite. The bounds for the sum are S4 + divergent and [tex]S4 + [510/4(6^4 - 5^4)].[/tex]

To compute the sum of the series [tex]\(\sum_{n=1}^{6} 5 \cdot 10n^3\),[/tex] we substitute the values of \(n\) from 1 to 6 into the expression [tex]\(5 \cdot 10n^3\)[/tex] and add them up:

[tex]\[S_6 = 5 \cdot 10(1^3) + 5 \cdot 10(2^3) + 5 \cdot 10(3^3) + 5 \cdot 10(4^3) + 5 \cdot 10(5^3) + 5 \cdot 10(6^3)\][/tex]

Simplifying the expression:

[tex]\[S_6 = 5 \cdot 10 + 5 \cdot 80 + 5 \cdot 270 + 5 \cdot 640 + 5 \cdot 1250 + 5 \cdot 2160\]\[S_6 = 50 + 400 + 1350 + 3200 + 6250 + 10800\]\[S_6 = 22450\][/tex]

Therefore, the sum of the series [tex]\(\sum_{n=1}^{6} 5 \cdot 10n^3\)[/tex] is 22450.

To estimate the error in using [tex]\(S_4\)[/tex] as an approximation of the sum of the series, we can use the remainder term formula for the integral test. The remainder term [tex]\(R_n\)[/tex]is given by:

[tex]\[R_n = \int_{n+1}^{\infty} f(x) \, dx\][/tex]

In this case, the function f(x) is [tex]\(5 \cdot 10x^3\)[/tex] and n = 4. So, we need to find the integral:

[tex]\[\int_{5}^{\infty} 5 \cdot 10x^3 \, dx\][/tex]

Evaluating the integral:

[tex]\[\int_{5}^{\infty} 5 \cdot 10x^3 \, dx = \left[ \frac{5 \cdot 10}{4}x^4 \right]_{5}^{\infty}\][/tex]

Since the upper limit is infinity, the integral diverges. Therefore, the error in using [tex]\(S_4\)[/tex] as an approximation of the sum of the series is infinite.

Lastly, using n = 4 and the fact that the series is a decreasing series, we can determine bounds on the sum of the series:

[tex]\[S_4 + \int_{4+1}^{\infty} 5 \cdot 10x^3 \, dx < S < S_4 + \int_{4+1}^{4+2} 5 \cdot 10x^3 \, dx\][/tex]

Simplifying:

[tex]\[S_4 + \int_{5}^{\infty} 5 \cdot 10x^3 \, dx < S < S_4 + \int_{5}^{6} 5 \cdot 10x^3 \, dx\][/tex]

Substituting the integral values:

[tex]\[S_4 + \left[ \frac{5 \cdot 10}{4}x^4 \right]_{5}^{\infty} < S < S_4 + \left[ \frac{5 \cdot 10}{4}x^4 \right]_{5}^{6}\][/tex]

Since the integral from 5 to infinity diverges, we have:

[tex]\[S_4 + \text{divergent} < S < S_4 + \left[ \frac{5 \cdot 10}{4}(6^4 - 5^4) \right]\][/tex]

Therefore, the bounds for the sum of the series are [tex]\(S_4 + \text{divergent}\) and \(S_4 + \left[ \frac{5 \cdot 10}{4}(6^4 - 5^4) \right]\).[/tex]

Thereforre, the results can be expressed as follows:

The sum of the series is 22450.

The error in using [tex]\(S_4\)[/tex] as an approximation of the sum of the series is infinite.

The bounds for the sum of the series are[tex]\(S_4 + \text{divergent}\) and \(S_4 + \left[ \frac{5 \cdot 10}{4}(6^4 - 5^4) \right]\).[/tex]

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Find the volume of the solid region Q cut from the sphere
x^2+y^2+z^2=4 by the cylinder r = 2 sintheta

Answers

The volume of the solid region Q cut from the sphere x^2+y^2+z^2=4 by the cylinder r = 2 sintheta is (8/45) π.

Since the cylinder is defined in polar coordinates, we will use polar coordinates to solve this problem.

The equation of the sphere is x^2 + y^2 + z^2 = 4, which can be rewritten in terms of polar coordinates as:

r^2 + z^2 = 4     (1)

The equation of the cylinder is r = 2 sin(theta), which again can be rewritten as r^2 = 2r sin(theta):

r^2 - 2r sin(theta) = 0

r(r - 2 sin(theta)) = 0

So, either r = 0 or r = 2 sin(theta).

We want to find the volume of the solid region Q that is cut from the sphere by the cylinder. Since the cylinder is symmetric about the z-axis, we only need to consider the part of the sphere in the first octant (x, y, z > 0) that lies inside the cylinder.

In polar coordinates, the limits of integration are:

0 ≤ r ≤ 2 sin(theta)

0 ≤ theta ≤ π/2

0 ≤ z ≤ sqrt(4 - r^2)

Using the cylindrical coordinate triple integral, we can write the volume of Q as:

V = ∫∫∫Q dV

= ∫∫∫Q r dz dr dtheta

= ∫0^(π/2) ∫0^(2 sin(theta)) ∫0^(sqrt(4-r^2)) r dz dr dtheta

= ∫0^(π/2) ∫0^(2 sin(theta)) r(sqrt(4-r^2)) dr dtheta

= ∫0^(π/2) [-1/3 (4 - r^2)^(3/2)]_0^(2 sin(theta)) dtheta

= ∫0^(π/2) [-8/3 (sin^2(theta))^3/2 + 8/3] dtheta

= [16/9 - 32/15] π/2

= (8/45) π

Therefore, the volume of the solid region Q cut from the sphere x^2+y^2+z^2=4 by the cylinder r = 2 sin(theta) is (8/45) π.

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Question 1 Linear Equations. . Solve the following DE using separable variable method. (i) (x – 4) y4dx – 23 (y2 – 3) dy = 0. dy = 1, y (0) = 1. dx (ii) e-y -> (1+ = : = Question 2 Second Orde

Answers

The solution to the The solution to the differential equation is:

y² – 3 = (1/2)x² - 4x - 2

(ii) the second part of your question seems to be incomplete or unclear.

(i) to solve the differential equation (x – 4) y⁴ dx – 23 (y² – 3) dy = 0, we'll use the separable variable method.

rearranging the terms, we have:

(y² – 3) dy = (x – 4) y⁴ dx

now, we can separate the variables by dividing both sides by y⁴ (y² – 3):

(1 / y⁴) (y² – 3) dy = (x – 4) dx

simplifying the left side:

(1 / y⁴) (y² – 3) dy = (1 / y²) dy

integrating both sides:

∫ (1 / y²) dy = ∫ (x – 4) dx

to integrate the left side, we can use the substitution u = y² – 3:

∫ (1 / y²) dy = ∫ du

= u + c1

= y² – 3 + c1

now, integrating the right side:

∫ (x – 4) dx = (1/2)x² - 4x + c2

putting everything together, we have:

y² – 3 + c1 = (1/2)x² - 4x + c2

we can combine the constants c1 and c2 into a single constant c:

y² – 3 = (1/2)x² - 4x + c

now, let's use the initial condition dy/dx = 1, y(0) = 1 to find the value of c. substituting x = 0 and y = 1 into the equation:

1² – 3 = (1/2)(0)² - 4(0) + c

-2 = c

please provide the complete equation or information for question 2, and i'll be happy to help you solve it.

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In the following exercises, find the Maclaurin series of each function.
207. 70-4 209. ising Identity 16x) = sinº, sin x = - 200(2 foos 2

Answers

The Maclaurin series of function f(x) = [tex]e^{x^3}[/tex] is  ∑₀ (x³)ⁿ/n!

What is the Maclaurin series?

A function's Taylor series or Taylor expansion is an infinite sum of terms represented in terms of the function's derivatives at a single point. Near this point, the function and the sum of its Taylor series are equivalent to most typical functions.

Here, we have

Given: f(x) = [tex]e^{x^3}[/tex]

Using the Maclaurin series we get

f(x) = f(0) + f'(0)x/1! + f"(0)x²/2! + .....fⁿ(0)xⁿ/n!...(1)

Now, the Maclaurin series for f(x) = [tex]e^{x}[/tex]

f(0) = 1

f'(x) =  [tex]e^{x}[/tex] , f'(0) = 1

f"(x) =  [tex]e^{x}[/tex],   f"(0) = 1

.

.

.

.

fⁿ(x) =  [tex]e^{x}[/tex], fⁿ(0) = 1

Now, equation(1) becomes:

f(x) = f(0) + f'(0)x/1! + f"(0)x²/2! + .....fⁿ(0)xⁿ/n!

f(x) = 1 + x + x²/2! + ....xⁿ/n!

f(x) =  [tex]e^{x}[/tex] = ∑₀ xⁿ/n!....(2)

Now, the Maclaurin series for f(x) = [tex]e^{x^3}[/tex]

f(x) = [tex]e^{x^3}[/tex] = ∑₀ (x³)ⁿ/n!

Hence, the Maclaurin series of function f(x) = [tex]e^{x^3}[/tex] is  ∑₀ (x³)ⁿ/n!

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Find the volume of the indicated solid in the first octant bounded by the cylinder c = 9 - a² then the planes a = 0, b = 0, b = 2

Answers

The volume of the solid in the first octant bounded by the cylinder c = 9 - a², and the planes a = 0, b = 0, and b = 2 can be calculated using triple integration.

To find the volume, we can set up a triple integral over the region defined by the given boundaries. The integral is given by ∭R f(a, b, c) da db dc, where R represents the region bounded by the planes a = 0, b = 0, b = 2, and the cylinder c = 9 - a², and f(a, b, c) is a constant function equal to 1, indicating that we are calculating the volume.

Integrating with respect to c, the limits of integration are determined by the equation of the cylinder c = 9 - a². For each value of a and b, c ranges from 0 to 9 - a². The limits of integration for a and b are determined by the planes a = 0, b = 0, and b = 2.

Evaluating the triple integral over the region R using the limits of integration will give us the volume of the solid in the first octant bounded by the given cylinder and planes.

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Exercise5 : Find the general solution of the ODE 4y'' – 20y' + 25y = (1 + x + x2) cos (3x). Exercise6 : Find the general solution of the ODE d²y + 49 y = 2x² sin (7x). dr2

Answers

The general solution of the ODE 4y'' - 20y' + 25y = (1 + x + x²) cos(3x) is y = c₁ e²(2.5x) + c₂ x e²(2.5x) + A + Bx + Cx² + D cos(3x) + E sin(3x).The general solution of the ODE d²y + 49y = 2x² sin(7x) is y = c₁ e²(7ix) + c₂ e²(-7ix) + (Ax²+ Bx + C) sin(7x) + (Dx² + Ex + F) cos(7x).

Exercise 5: To find the general solution of the given ordinary differential equation (ODE), 4y'' - 20y' + 25y = (1 + x + x²) cos(3x)

Step 1: Find the complementary solution:

Assume y = e²(rx) and substitute it into the ODE:

4(r² e²(rx)) - 20(r e²(rx)) + 25(e²(rx)) = 0

Simplify the equation by dividing through by e²(rx):

4r² - 20r + 25 = 0

Solve this quadratic equation to find the values of r:

r = (20 ± √(20² - 4 ×4 × 25)) / (2 × 4)

r = (20 ± √(400 - 400)) / 8

r = (20 ± √0) / 8

r = 20 / 8

r = 2.5

y-c = c₁ e²(2.5x) + c₂ x e²(2.5x)

Step 2: Find the particular solution:

To find the particular solution the method of undetermined coefficients the particular solution has the form

y-p = A + Bx + Cx² + D cos(3x) + E sin(3x)

Substitute this into the ODE and solve for the coefficients A, B, C, D, and E by comparing like terms.

Step 3: Combine the complementary and particular solutions

The general solution is obtained by adding the complementary and particular solutions

y = y-c + y-p

Exercise 6: To find the general solution of the given ODE d²y + 49y = 2x² sin(7x),

Step 1: Find the complementary solution

Assume y = e²(rx) and substitute it into the ODE

(r² e²(rx)) + 49(e²(rx)) = 0

Simplify the equation by dividing through by e²(rx)

r² + 49 = 0

Solve this quadratic equation to find the values of r:

r = ±√(-49)

r = ±7i

The complementary solution is given by:

y-c = c₁ e²(7ix) + c₂ e²(-7ix)

Step 2: Find the particular solution:

To find the particular solution the method of undetermined coefficients  the particular solution has the form:

y-p = (Ax² + Bx + C) sin(7x) + (Dx² + Ex + F) cos(7x)

Substitute this into the ODE and solve for the coefficients A, B, C, D, E, and F

Step 3: Combine the complementary and particular solutions:

The general solution is obtained by adding the complementary and particular solutions:

y = y-c + y-p

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URGENT
A local extreme point of a polynomial function f(x) can only occur when f'(x) = 0. True False

Answers

False. A local extreme point of a polynomial function f(x) can not occur when f'(x) = 0.

A local extreme point of a polynomial function f(x) can occur when f'(x) = 0, but it is not a necessary condition. The critical points of a function, where f'(x) = 0 or f'(x) is undefined, represent potential locations of extreme points such as local maxima or minima.

However, it is important to note that not all critical points correspond to extreme points. The behavior of the function around the critical points needs to be further analyzed using the second derivative test or other methods to determine if they are indeed local extrema.

Therefore, while f'(x) = 0 can indicate a potential extreme point, it is not the only criterion for the presence of a local extreme.

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Question Three = (1) Find the area under y = x3 over [0, 1] using the following parametrizations y a) x x =ť, y=t6. (6) x =ť, y=t'. t = у = =

Answers

We are given the function y = x^3 and asked to find the area under the curve over the interval [0, 1] using two different parametrizations: (a) x = t, y = t^6, and (b) x = t, y = t'.

The answer involves finding the parametric equations, calculating the derivatives, setting up the integral, and evaluating it to find the area.

(a) For the parametrization x = t, y = t^6, we can calculate the derivatives dx/dt = 1 and dy/dt = 6t^5. The integral for finding the area becomes ∫[0,1] y dx = ∫[0,1] (t^6)(1) dt. Evaluating this integral gives us the area under the curve for this parametrization.

(b) For the parametrization x = t, y = t', we need to find the derivative dy/dx. Differentiating y = x^3 with respect to x gives us dy/dx = 3x^2. Substituting this into the integral ∫[0,1] y dx = ∫[0,1] (t')(3x^2) dt, we can evaluate the integral to find the area under the curve for this parametrization.

By evaluating the integrals for both parametrizations, we can find the respective areas under the curve y = x^3 over the interval [0, 1]. The specific calculations will depend on the parametrization used and involve integrating the appropriate expression with respect to the parameter t.

Note: The specific calculations for the integrals are not provided in this summary, but they can be performed using standard integration techniques to find the areas under the curve for each parametrization.

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A hyperbola with a vertical transverse axis contains one endpoint at (4,5). The equations of the asymptotes are y - x = 0 and y + x = 8. Write the equation for the hyperbola.

Answers

The equation of the hyperbola with a vertical transverse axis, one endpoint at (4,5), and asymptotes y - x = 0 and y + x = 8 is (x-4)^2/9 - (y-5)^2/16 = 1.

Given that the hyperbola has a vertical transverse axis, we can use the standard form equation for a hyperbola with a vertical transverse axis:

(x-h)^2/a^2 - (y-k)^2/b^2 = 1

where (h, k) represents the coordinates of the center of the hyperbola.

Since the asymptotes are y - x = 0 and y + x = 8, we can rewrite them in slope-intercept form:

y = x and y = -x + 8.

The center of the hyperbola lies at the intersection of the asymptotes, which is (4, 4) (solving the system of equations y = x and y + x = 8).

Now, we can determine the values of a and b by considering the distance between the center (4, 4) and the endpoint (4, 5). The distance between these points is the value of a.

Using the distance formula:

a = sqrt((4-4)^2 + (5-4)^2) = 1

To determine the value of b, we consider the distance from the center (4, 4) to the asymptotes. The distance from the center to an asymptote is the value of b.

Using the distance formula and the equation y = x (one of the asymptotes):

b = sqrt((4-0)^2 + (4-0)^2)/sqrt(2) = 4sqrt(2)

Therefore, the equation of the hyperbola is (x-4)^2/9 - (y-5)^2/16 = 1.

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Solve by using a system of two equations in two variables.

Six years ago, Joe Foster was two years more than five times as old as his daughter. Six years from now, he will be 11 years more than twice as old as she will be. How old is Joe ?

Answers

Answer:

Joe is 43 years old.

Step-by-step explanation:

Let x be the age of Joe Foster at present

Let y be the age of his daughter at present

Six years ago, their ages are:

x - 6 and y - 6 respectively

Six years from now, their ages will be:

x + 6 and y + 6

Six years ago, Joe Foster was two years more than five times as old as his daughter.

(x - 6) = 5(y-6) + 2    

Simplify

x - 6 = 5y - 30 + 2

x = 5y -30 + 2 + 6

x = 5y - 22   ---equation 1

Six years from now, he will be 11 years more than twice as old as she will be.

(x + 6) = 2(y+6) + 11  

Simplify

x + 6 = 2y + 12 + 11

x = 2y + 12 + 11 -6

x = 2y + 17    ----equation 2

Subtract equation 2 from equation 1

      x = 5y - 22

    -(x = 2y + 17)

      0 = 3y - 39

Transpose

3y = 39

y = 39/3

y = 13

Substitute y = 3 to equation 1 x = 5y - 22

x = 5(13) - 22

x = 65 - 22

x = 43

Find the indefinite integral. (Remember to use absolute values where appropriate. Use C for the constant of inter | 2x² +8X=1 dx X-5 Evaluate the limit, using L'Hôpital's Rule if necessary. (If you need to use oo or -co, enter INFINITY or 6x³ - 8x + 9 lim X-- 4x³ +9 Find the limit (if it exists). (If an answer does not exist, enter DNE. Round your answer to four deci lim x-6+ 5

Answers

The indefinite integral of 2x^2 + 8x - 1 dx is (2/3)x^3 + 4x^2 - x + C, where C is the constant of integration.

To find the indefinite integral of 2x^2 + 8x - 1 dx, we need to integrate each term separately.

The integral of x^n dx, where n is a constant, is (1/(n+1))x^(n+1). Applying this rule, we find:

∫(2x^2 + 8x - 1) dx = (2/3)x^3 + 4x^2 - x + C

The constant of integration, denoted by C, accounts for the fact that the derivative of a constant is zero. It represents an arbitrary constant term that could have been present in the original function but was lost during differentiation.

For the limit of (6x^3 - 8x + 9) / (4x^3 + 9) as x approaches -∞, we can use L'Hôpital's Rule if necessary.

L'Hôpital's Rule states that if the limit of a quotient of two functions is indeterminate (such as 0/0 or ∞/∞), then the limit of the derivative of the numerator divided by the derivative of the denominator may yield the same result.

In this case, the limit is not indeterminate as x approaches -∞, so L'Hôpital's Rule is not needed.

To find the limit of (6x^3 - 8x + 9) / (4x^3 + 9) as x approaches -∞, we can evaluate the expression by plugging in -∞ for x:

lim(x→-∞) (6x^3 - 8x + 9) / (4x^3 + 9) = (-∞)^3 / (∞)^3 = -1

Therefore, the limit of (6x^3 - 8x + 9) / (4x^3 + 9) as x approaches -∞ is -1.

Lastly, for the limit of 5 as x approaches 6+, no further calculations are necessary. The limit is simply 5, meaning that as x approaches 6 from the right (positive direction), the value of the function approaches 5.

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Find the most general antiderivative of the function
f(x) =
x5 − x3 + 6x
x4
Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative.)
f(x) = 5
x
+ 3 cos(x)
Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative.)
f(x) = 2ex − 9 cosh(x)
Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative.)
g(t) =
7 + t + t2

Answers

The most general antiderivative of f(x) = x^5 - x^3 + 6x is (1/6)x^6 - (1/4)x^4 + 3/2x^2 + C. The antiderivative of f(x) = 5x + 3cos(x) is (5/2)x^2 + 3sin(x) + C. The antiderivative of f(x) = 2ex - 9cosh(x) is 2ex - 9sinh(x) + C. The antiderivative of g(t) = 7 + t + t^2 is 7t + (1/2)t^2 + (1/3)t^3 + C.

The most general antiderivative of the function f(x) = x^5 - x^3 + 6x is F(x) = (1/6)x^6 - (1/4)x^4 + 3/2x^2 + C, where C is the constant of integration. To verify this antiderivative, we can differentiate F(x) and check if it equals f(x). Differentiating F(x) gives us f(x) = 6x^5 - 4x^3 + 3x, which matches the original function, confirming that F(x) is indeed the antiderivative of f(x). The most general antiderivative of the function f(x) = 5x + 3cos(x) is F(x) = (5/2)x^2 + 3sin(x) + C, where C is the constant of integration. To check if F(x) is the correct antiderivative, we can differentiate it and see if it matches the original function.

Differentiating F(x) gives us f(x) = 5x + 3cos(x), which is the same as the original function, confirming that F(x) is the antiderivative of f(x). The most general antiderivative of the function f(x) = 2ex - 9cosh(x) is F(x) = 2ex - 9sinh(x) + C, where C is the constant of integration. To verify this antiderivative, we can differentiate F(x) and see if it equals f(x). Differentiating F(x) gives us f(x) = 2ex - 9cosh(x), which matches the original function, confirming that F(x) is the antiderivative of f(x). The most general antiderivative of the function g(t) = 7 + t + t^2 is G(t) = 7t + (1/2)t^2 + (1/3)t^3 + C, where C is the constant of integration. We can check if G(t) is the correct antiderivative by differentiating it and verifying if it matches the original function. Differentiating G(t) gives us g(t) = 7 + t + t^2, which is the same as the original function, confirming that G(t) is the antiderivative of g(t).

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Suppose that the streets of a city are laid out in a grid with streets running north–south and east–west. Consider the following scheme for patrolling an area of 16 blocks by 16 blocks. An officer commences walking at the intersection in the center of the area. At the corner of each block the officer randomly elects to go north, south, east, or west. What is the probability that the officer will
a reach the boundary of the patrol area after walking the first 8 blocks?
b return to the starting point after walking exactly 4 blocks?

Answers

a) The probability that the officer will reach the boundary of the patrol area after walking the first 8 blocks can be calculated by considering the possible paths the officer can take. Since the officer randomly elects to go north, south, east, or west at each corner, there are 4 possible directions at each intersection.

After walking 8 blocks, the officer will have encountered 8 intersections and made 8 random choices. The total number of possible paths the officer can take is 4⁸ since there are 4 choices at each intersection. Out of these paths, we need to determine the number of paths that lead to the boundary of the patrol area.

To reach the boundary after 8 blocks, the officer must choose the correct sequence of directions that eventually takes them to one of the four sides of the patrol area. For each choice at an intersection, there is a 1/4 probability of selecting the correct direction towards the boundary. Therefore, the probability of the officer reaching the boundary after walking the first 8 blocks is (1/4)⁸.

b) To calculate the probability of the officer returning to the starting point after walking exactly 4 blocks, we need to consider the possible paths again. After 4 blocks, the officer will have encountered 4 intersections and made 4 random choices. The total number of possible paths the officer can take is 4⁴.

In order to return to the starting point, the officer must choose the correct sequence of directions that leads them back to the starting intersection. There is only one correct path that takes the officer back to the starting point after exactly 4 blocks. Therefore, the probability of the officer returning to the starting point after walking exactly 4 blocks is 1 out of the total number of possible paths, which is 1/4⁴.

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Let f be the function 8x1 for x < -1 f(x) = ax + b for − 1 ≤ x ≤ 1/1/ 3x-1 for x > 1/1/ Find the values of a and b that make the function continuous. (Use symbolic notation and fractions where n

Answers

The values of a and b that make the function continuous are a = 3 and b = -11.

To make the function continuous, we need to ensure that the function values match at the points where the function changes its definition.

At x = -1, we have:

f(-1) = 8(-1) = -8

At x = 1, we have:

f(1) = a(1) + b

Setting these two function values equal, we have:

-8 = a(1) + b

At x = 1, the derivative of the left and right portions of the function should also match to maintain continuity. Taking the derivative of f(x) for x > 1, we have:

f'(x) = 3

Setting this equal to the derivative of the middle portion of the function, we have:

3 = a

Substituting the value of a into the equation -8 = a + b, we get:

-8 = 3 + b

Simplifying, we find:

b = -11

Therefore, the values of a and b that make the function continuous are a = 3 and b = -11.

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Find the equation of the plane containing lines Li and he L1 = > x = 2t+1, y = 3t+2 z=4t+ 3 L2=> x=s+2 y=2s+4 z=-4s-1.

Answers

The equation of the plane is -14x + 12y - z + d = 0, where d is a constant.

What is the equation of the plane containing lines L1 and L2?

To find the equation of the plane containing lines L1 and L2, we first need to find two points on each line.

For L1, we can choose t=0 and t=1 to get point P1(1, 2, 3) and point P2(3, 5, 7).

For L2, we can choose s=0 and s=1 to get point P3(2, 4, -1) and point P4(3, 6, -5).

Next, we can find two vectors that lie on the plane by subtracting the coordinates of the two points:

Vector v1 = P2 - P1 = (3-1, 5-2, 7-3) = (2, 3, 4)

Vector v2 = P4 - P3 = (3-2, 6-4, -5+1) = (1, 2, -4)

Finally, we can find the equation of the plane by taking the cross product of the two vectors:

Normal vector n = v1 x v2 = (2, 3, 4) x (1, 2, -4) = (-14, 12, -1)

Therefore, the equation of the plane containing lines L1 and L2 is -14x + 12y - z + d = 0, where d is a constant.

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Ava ran at an average speed of 6 miles per hour. Kelly ran at an average speed of 8 miles per hour.When will Ava and Kelly be 3/4 mile apart ?

Answers

Ava and Kelly will be 3/4 mile apart after 22.5 minutes.

To determine when Ava and Kelly will be 3/4 mile apart, we can consider their relative speed. The relative speed is the difference between their individual speeds.

Ava's speed = 6 miles per hour

Kelly's speed = 8 miles per hour

The relative speed of Ava and Kelly is:

Relative speed = Kelly's speed - Ava's speed

= 8 miles per hour - 6 miles per hour

= 2 miles per hour

This means that Ava and Kelly are moving away from each other at a rate of 2 miles per hour.

To calculate the time it takes for them to be 3/4 mile apart, we can use the formula:

Distance = Speed × Time

In this case, the distance they need to cover is 3/4 mile, and the relative speed is 2 miles per hour.

3/4 mile = 2 miles per hour × Time

Simplifying the equation:

3/4 = 2 × Time

Dividing both sides by 2:

3/4 × 1/2 = Time

3/8 = Time

Therefore, it will take Ava and Kelly 3/8 hours (or 22.5 minutes) to be 3/4 mile apart.

Thus, Ava and Kelly will be 3/4 mile apart after 22.5 minutes.

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(10 points) Suppose a virus spreads so that the number N of people infected grows tially with time t. The table below shows how many days it takes from the initial to have various numbers of cases. t=# of days 36 63 N=# of cases 1 million 8 million How many days since the initial outbreak until the virus infects 40 million people? ( to the nearest whole number of days)

Answers

It would take approximately 59 days since the initial outbreak until the virus infects 40 million people.

The growth rate can be found by dividing the final number of cases by the initial number of cases and then taking the t-th root of that value, where t is the number of days it took to reach the final number of cases from the initial.

In this case, the growth rate is (8 million / 1 million)^(1/27), rounded to three decimal places which is 1.297.

Using this growth rate, we can calculate how many days it would take to reach 40 million cases:

40 million = 1 million * (1.297)^d

Solving for d, we get:

d = log(40)/log(1.297)

d ≈ 58.5

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In a bag, there are 4 red towels and 3 yellow towels. Towels are drawn at random from the bag, one after the other without replacement, until a red towel is
obtained. If X is the total number of towels drawn from the bag, find
i. the probability distribution of variable X.
the mean of variable X.
the variance of variable X.

Answers

The probability distribution of the variable X, representing the total number of towels drawn from the bag until a red towel is obtained, follows a geometric distribution. The mean of variable X can be calculated as 7/2, and the variance can be calculated as 35/4.

In given , the variable X represents the total number of towels drawn from the bag until a red towel is obtained. Since towels are drawn without replacement, this situation follows a geometric distribution. The probability distribution of X can be calculated as follows:

P(X = k) = (3/7)^(k-1) * (4/7)

where k represents the number of towels drawn.

To calculate the mean of variable X, we can use the formula for the mean of a geometric distribution, which is given by:

mean = 1/p = 1/(4/7) = 7/4 = 7/2

For the variance of variable X, we can use the formula for the variance of a geometric distribution:

variance = (1 - p) / p^2 = (3/7) / (4/7)^2 = 35/4

Therefore, the mean of variable X is 7/2 and the variance is 35/4. These values provide information about the average number of towels drawn until a red towel is obtained and the variability around that average.

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(1 point) Solve the initial-value problem 24" + 5y' – 3y = 0, y(0) = -1, y (0) = 31. Answer: y(2)

Answers

After solving the initial-value problem, the value of y(2) is 1.888.

Given differential equation is 24y + 5y - 3y = 0`.

Initial conditions are y(0) = -1, y'(0) = 31.

To solve the given initial-value problem, we can use the characteristic equation method which gives the value of `y`.

Step 1: Write the characteristic equation. We can rewrite the differential equation as:
24r² + 5r - 3 = 0
Solve the above equation using the quadratic formula to get:


r = (-5 ± √(5² - 4(24)(-3))) / (2(24))
This simplifies to:


r = (-5 ± 7i) / 48


Step 2: Write the general solution.

Using the roots from above, the general solution to the differential equation is:
y(t) = [tex]e^(-5t/48) (c₁cos((7/48)t) + c₂sin((7/48)t))[/tex]


where `c₁` and `c₂` are constants.

Step 3: Find the constants `c₁` and `c₂` using the initial conditions. To find `c₁` and `c₂`, we use the initial conditions `y(0) = -1, y'(0) = 31`.

The value of `y(0)` is:


y(0) = e^(0)(c₁cos(0) + c₂sin(0))
    = c₁
The value of `y'(0)` is:


y'(t) = -5/48e^(-5t/48)(c₁cos((7/48)t) + c₂sin((7/48)t)) + 7/48e^(-5t/48)(-c₁sin((7/48)t) + c₂cos((7/48)t))

y'(0) = -5/48(c₁cos(0) + c₂sin(0)) + 7/48(-c₁sin(0) + c₂cos(0))
     = -5/48c₁ + 7/48c₂


Substituting `y(0) = -1` and `y'(0) = 31`, we get the system of equations:
-1 = c₁
31 = -5/48c₁ + 7/48c₂


Solving the above system of equations for `c₁` and `c₂`, we get:
c₁ = -1
c₂ = 2321/33


Step 4: Find `y(2)`. Using the constants found in step 3, we can now find `y(2)`.
y(2) = e^(-5/24)(-1 cos(7/24) + 2321/336 sin(7/24))
    ≈ 1.888


Hence, the value of y(2) is 1.888.

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(1 point) Find the Laplace transform of 0, ƒ(t) = = 2sin(nt), 0, F(s) = = t < 2 2

Answers

The Laplace transform of ƒ(t) = 2sin(nt) is F(s) = 2n / (s² + n²), valid for t < 2. It represents the Laplace transform of ƒ(t) = 2sin(nt) for t < 2.

The Laplace transform of a function ƒ(t) is defined as F(s) = ∫[0 to ∞] ƒ(t)e^(-st) dt. For the given function ƒ(t) = 2sin(nt), where n is a constant, we can apply the Laplace transform formula for sine functions: L{sin(nt)} = 2n / (s² + n²).

The Laplace transform is valid for t < 2, so the transform function F(s) is only applicable within that interval. The result can be obtained by substituting the appropriate values into the Laplace transform formula. Thus, F(s) = 2n / (s² + n²) represents the Laplace transform of ƒ(t) = 2sin(nt) for t < 2.

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Find the indefinite integral. (Remember to use absolute values where appropriate. Use for the constant of integration) | Cacax mtan(2x)+ c

Answers

The indefinite integral of |cosec(x) tan(2x)| dx is |cosec(x)| + C.

To find the indefinite integral of |cosec(x) tan(2x)| dx, we can split the absolute value into two cases based on the sign of cosec(x).Case 1: If cosec(x) > 0, then the integral becomes ∫(cosec(x) tan(2x)) dx. By using the substitution u = cos(x), du = -sin(x) dx, we can rewrite the integral as ∫(-du/tan(2x)). The integral of -du/tan(2x) can be evaluated using the substitution v = 2x, dv = 2dx. Substituting these values, we get -∫(du/tan(v)) = -ln|sec(v)| + C = -ln|sec(2x)| + C.Case 2: If cosec(x) < 0, then the integral becomes ∫(-cosec(x) tan(2x)) dx.

By using the substitution u = -cos(x), du = sin(x) dx, we can rewrite the integral as ∫(du/tan(2x)). Using the same substitution v = 2x, dv = 2dx, we get ∫(du/tan(v)) = ln|sec(v)| + C = ln|sec(2x)| + C.Combining the results from both cases, the indefinite integral of |cosec(x) tan(2x)| dx is |cosec(x)| + C, where C is the constant of integration.

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Box-Office Receipts The total worldwide box-office receipts for a long-running movie are approximated by the following function where T(x) is measured in millions of dollars and x is the number of years since the movie's release. 120x² T(x) = x²+4 How fast are the total receipts changing 1 yr, 5 yr, and 6 yr after its release? (Round your answers to two decimal places.) after 1 yr $ million/year after 5 yr $ million/year after 6 yr $ million/year.

Answers

The total receipts changing 1 yr, 5 yr, and 6 yr after its release

After 1 year: $240.00 million/year

After 5 years: $2,400.00 million/year

After 6 years: $2,880.00 million/year

Let's have stepwise solution:

To determine how fast the total receipts are changing after 1 year, 5 years, and 6 years, we need to find the derivative of the function T(x) with respect to x. Then we can evaluate the derivatives at the given values of x.

To find the derivative of T(x), we'll differentiate each term separately:

d(T(x))/dx = d(120x^2)/dx + d(x^2)/dx + d(4)/dx

= 240x + 2x

Simplifying this expression, we have:

d(T(x))/dx = 242x

Now we can evaluate the derivative at the specified values of x

a) After 1 year (x = 1):

d(T(x))/dx = 242x

= 242(1)

= 242 million/year

b) After 5 years (x = 5):

     = 242(5) = 1210 million/year

c) After 6 years (x = 6):

       = 242(6) = 1452 million/year

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Social scientists gather data from samples instead of populations because
a. samples are much larger and more complete.
b. samples are more trustworthy.
c. populations are often too large to test.
d. samples are more meaningful and interesting

Answers

Social scientists gather data from samples instead of populations because c. populations are often too large to test.

Social scientists often cannot test an entire population due to its size, so they gather data from a smaller group or sample that is representative of the larger population. This allows them to make inferences about the larger population based on the data collected from the sample. The sample size must be large enough to accurately represent the population, but it is not necessarily larger or more complete than the population itself. Trustworthiness, meaning, and interest are subjective and do not necessarily determine why social scientists choose to gather data from samples.

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Given the parametric equations below, eliminate the parameter t to obtain an equation for y as a function of x fa(t) = 7√t y(t) = 2t +3 y(x) =

Answers

By algebra properties, the Cartesian form of the set of parametric equations is y(x) = (2 / 49) · x² + 3.

How to find the Cartesian form of a set of parametric equations

In this problem we find two parametric equations related to two variables {x, y}, from which we need to find its Cartesian form, that is, to find an equation of variable y as a function of variable x by eliminating parameter t. This can be done by algebra properties. First, write the entire set of parametric equations:

x(t) = 7√t, y(t) = 2 · t + 3

Second, clear parameter t as a function of y:

t = (y - 3) / 2

Third, substitute on the first expression:

x = 7 · √[(y - 3) / 2]

Fourth, clear y by algebra properties:

x² = 49 · (y - 3) / 2

(2 / 49) · x² = y - 3

y(x) = (2 / 49) · x² + 3

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On a separate piece of paper, sketch a unit circle with angle 0 in standard position. Use the circle to answer the
following questions:
a. For what values of 0 is the sine increasing? Decreasing?
b. For what values of 0 is the cosine increasing? Decreasing?
c. For which angle between 0° and 360° is sine equal to 0?
Where is cosine equal to 0?

Answers

a. Increasing- 0° and 90° (quadrant I) and 270° and 360° (quadrant IV). Decreasing- 90° and 270° (quadrants II and III).

b. Increasing- 0° and 90° (quadrant I) and 180° and 270° (quadrant III). Decreasing- 90° and 180° (quadrant II) and 270° and 360° (quadrant IV).

c. Sine- 0°, 180°, and 360°. Cosine- 90° and 270°

The sine function represents the vertical coordinate of points on the unit circle, while the cosine function represents the horizontal coordinate. For the sine function, as we move counterclockwise from 0° to 90°, the y-coordinate increases, hence sine increases. From 90° to 270°, the y-coordinate decreases, resulting in a decreasing sine.

Finally, from 270° to 360°, the y-coordinate increases again. Similarly, for the cosine function, as we move counterclockwise from 0° to 90°, the x-coordinate increases, hence cosine increases. From 90° to 180°, the x-coordinate decreases, resulting in a decreasing cosine.

Finally, from 180° to 270°, the x-coordinate decreases again. Sine is equal to 0 at 0°, 180°, and 360° because those angles correspond to the y-coordinate being 0 on the unit circle. Cosine is equal to 0 at 90° and 270° because those angles correspond to the x-coordinate being 0 on the unit circle.

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Determine if the sequence is convergent or divergent. If it is convergent, find the limit: an = 3(1+3)n n

Answers

The sequence is divergent, as it does not approach a specific limit.

To determine if the sequence is convergent or divergent, we can examine the behavior of the terms as n approaches infinity.

The sequence is given by an = 3(1 + 3)^n.

As n approaches infinity, (1 + 3)^n will tend to infinity since the base is greater than 1 and we are raising it to increasingly larger powers.

Since the sequence is multiplied by 3(1 + 3)^n, the terms of the sequence will also tend to infinity.

Hence the sequence is divergent

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Does g(t) = 31- 35* +120° +90 have any inflection points? If so, identify them. + Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. An inflection p

Answers

The correct answer is : g(t) = 31 - 35t + 120t^2 + 90 does not have any inflection points.

An inflection point is a point on the graph of a function where the concavity changes. In other words, it is a point where the second derivative changes sign. To determine if a function has inflection points, we need to analyze the concavity of the function.

In the given function g(t) = 31 - 35t + 120t^2 + 90, we can find the second derivative by taking the derivative of the first derivative. The first derivative is g'(t) = -35 + 240t, and the second derivative is g''(t) = 240.

Since the second derivative, g''(t) = 240, is a constant, it does not change sign. Therefore, there are no points where the concavity changes, and the function g(t) = 31 - 35t + 120t^2 + 90 does not have any inflection points.

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Starting salaries for engineering students have a mean of $2,600 and a standard deviation of $1600. What is the probability that a random sample of 64 students from the school will have an average salary of more than $3,000?

Answers

The problem states that the starting salaries for engineering students have a mean of $2,600 and a standard deviation of $1,600. We are asked to find the probability that a random sample of 64 students from the school will have an average salary of more than $3,000 is approximately 2.28%.

To solve this problem, we can use the Central Limit Theorem, which states that the distribution of sample means tends to be approximately normal, regardless of the shape of the population distribution, as the sample size increases.

Since the sample size is large (n = 64), we can assume that the distribution of sample means will be approximately normal. The mean of the sample means will still be $2,600, but the standard deviation of the sample means, also known as the standard error, will be the population standard deviation divided by the square root of the sample size. In this case, the standard error is $1,600 / sqrt(64) = $200.

Next, we need to calculate the z-score, which measures the number of standard deviations an observation is from the mean. The z-score can be calculated using the formula: z = (sample mean - population mean) / standard error. In this case, the z-score is (3000 - 2600) / 200 = 2.

Finally, we can use a standard normal distribution table or a calculator to find the probability of a z-score greater than 2. The probability is approximately 0.0228 or 2.28%.

Therefore, the probability that a random sample of 64 students from the school will have an average salary of more than $3,000 is approximately 2.28%.

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1. Find the derivative of: "+sin(x) *x+cos(x) Simplify as fully as possible. (2 marks)

Answers

The derivative of the function sin(x) * x + cos(x) is xcos(x)

How to find the derivative of the function

From the question, we have the following parameters that can be used in our computation:

sin(x) * x + cos(x)

Express properly

So, we have

f(x) = sin(x) * x + cos(x)

The derivative of the functions can be calculated using the first principle which states that

if f(x) = axⁿ, then f'(x) = naxⁿ⁻¹

Using the above as a guide, we have the following:

If f(x) = sin(x) * x + cos(x), then

f'(x) = xcos(x)

Hence, the derivative of the function is xcos(x)

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Solve the triangle. ... Question content area top right Part 1 c 76 a=13.2 74 b the reorder point is the level of stocks that prompts a new order to be placed under the eoq model. group of answer choices true false Sketch the graph and show all extrema, inflection points, and asymptotes where applicable. 1) f(x) = x1/3(x2.252) 1) 400+ 2007 -20 -10 10 20 -200+ -400+ A) Rel max: (-6, 216 Vo) , Rel min: (6, -216 ) What is "matched" between donor tissue and recipient in order to increase the likelihood of a successful transplantation?a) antigensb) allergensc) Toll-like receptorsd) MHC proteinse) Antibodies The U.S. Supreme Court heard LabCorp v. Metabolite, Inc. in 2006. Metabolite accused LabCorp of infringing on a patent that covered a diagnostic test.Metabolite claimed that the patent for the test, which correlated between levels of homocysteine and vitamins B6 and B12, is infringed upon each time a doctor orders and interprets such a test. LabCorp argued that the correlation is a principle of nature and therefore the patent is invalid. The court dismissed the case.Metabolite wrote a brief to the court. The brief suggested that invalidating the patent might lead to the invalidation of all drug patents on the grounds that the inventors "merely discovered that certain chemicals interact with the human body in ways directed by chemistry."Answer the following question(s):Do you think a patent case should be able to have such broad implications for any industry? Why or why not? Support your answer!! This should be about a page of writing. Use sources and examples. (1 point) Evaluate the indefinite integral using U-Substitution and Partial Fraction Decomposition. () dt | tanale, ses tance) +2 A. What is the integral after using the U-Substitution u = tan(t)? so Hormones are secreted by endocrine glands into the bloodstream anda. travel only to cells with receptors specific to that hormone.b. travel to all cells but stimulate responses only in cells with receptors for that hormone.c. only elicit a stimulate responses in the cells that released them. Ronda, a psychology professor, is interested in whether or not caffeine consumption is linked to test scores. To test this, she ask each student in her class how many cups of coffee they drink each day. She also gives all students a standardized test over the material they have previously covered, and compares the test score of each student with how much caffeine they each consume daily. Ronda is using the___________method of research to test her hypothesis a) correlational. b) experimental. c) correlational-experimental. d) observational. #5 and #7 use direct comparison or limit comparison test,please7. Test for convergence/ divergence using a comparison test: n +21 n=1 n+ 3n (Inn) 5. Test for convergence/ divergence using a comparison test: a n3 n=1 Help me like seriously Protestant churches taught that Problem. 6: Findinn equation of the set of all points equidistant from the points (2, 3,5) and B(5, 4, 1) Note: For plane equations, DO NOT check an individual coefficient. You MUST complete the entir jane had been suffering through severe cold and was complaining of a frontal headache and a dull, aching pain at the side of her face. what could be her pathologies? the average price of a gallon of gasoline (regular unleaded) in 1976 was $0.64. in 1998 it was $1.06. the cpi factor in 1976 is 56.9 and the cpi factor in 1998 is 163.0. convert the 1976 price to constant 1998 dollars. was gas more expensive in 1976 or in 1998? choose two correct answers. B2 2- orbital picture