Safari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:54 AM mylab.pearson.com C G My Grade.. B https://le... My Grade.. B https://le.. Sign in to.. P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM ? E Quiz: Quiz CH 9 Question 15 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Question list K Find the profit function if cost and revenue are given by C(x) = 171 + 7.5x and R(x) = 5x - 0.08x2. Question 8 The profit function is P(x) =]. Question 9 Question 10 Question 11 O Question 12 Question 13 Question 14 O Question 15 O Question 16 NextSafari File Edit View History Bookmarks Window V mylab.pearson.com C G My Grade.. B https://le.. My Grade.. B https://le.. Sign in to.. P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM ? E Quiz: Quiz CH 9 Question 13 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Question list K Sketch the graph of f and determine where f is nondifferentiable. f ( x ) = X x - 3 ifx mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to.. P Assignme... P Quiz CH 9 Dashboard of Mail - Alz... MATH TE.. ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:55 AM E Quiz: Quiz CH 9 Question 20 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Sketch the graph of f and determine where f is nondifferentiable. Question list K f(x) = -4x if x mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le... Sign in to.. P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM ? E Quiz: Quiz CH 9 mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to... P Assignme... P Quiz CH 4 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:56 AM E Quiz: Quiz CH 4 Question 3 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Without performing any row operations, explain why the matrix does not have an inverse. Question list K O Question 1 O Question 2 Choose the correct reason below. O A. The matrix does not have a row or column of all zeros. O Question 3 O B. The value of the determinant, D, is 0. O C. The matrix is not a square matrix. O D. The value of the determinant, D, is not 0. O Question 4 Question 5 O Question 6 O Question 7 O Question 8 Question a NextSafari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:54 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade.. B https://le.. Sign in to... P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... x Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM ? E Quiz: Quiz CH 9 mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le... Sign in to... P Assignme... P Quiz CH 4 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:56 AM E Quiz: Quiz CH 4 Question 1 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Use the Gauss-Jordan elimination method to find all solutions of the systems of equations. Question list K 3X1 + 4X2 = 17 - 2x1 + 2X2 = - 2 O Question 1 8x1 - 29X2 = - 34 O Question 2 Write the system of equations as an augmented matrix. O Question 3 0 - 34 O Question 4 Solve the system. Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice. O A. The unique solution is x1 = and x2 =. Question 5 (Simplify your answers.) O B. The system has infinitely many solutions. The solution is x1 = and x2 = t. O Question 6 Simplify your answer. Type an expression using t as the variable.) O C. There is no solution. O Question 7 O Question 8 Question a NextSafari File Edit View History Bookmarks Window Help O US Q 8 @ Thu Dec 14 2:55 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to... P Assignme... P Quiz CH 9 Dashboard of Mail - Alz... MATH TE.. ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:55 AM E Quiz: Quiz CH 9 Question 21 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Question list K An object moves along the y-axis (marked in feet) so that its position at time x (in seconds) is given by the function f(x) = x - 15x2 + 72x. a. Find the instantaneous velocity function v = f'(x). b. Find the velocity when x = 1. c. Find the time(s) when v = 0. O Question 14 a. v = Question 15 b. The velocity of the object at x = 1 is |fu/s. (Simplify your answer.) c. The velocity is zero at x = seconds. O Question 16 (Simplify your answer. Use a comma to separate answers as needed.) Question 17 O Question 18 O Question 19 O Question 20 Question 21 NextSafari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:54 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade.. B https://le.. Sign in to.. P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM E Quiz: Quiz CH 9 Question 17 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Question list K The total cost and the total revenue (in dollars) for the production and sale of x ski jackets are given by C(x) = 20x + 23,680 and R(x) =200x -0.2x2 for OSX$ 1000. (A) Find the value of x where the graph of R(x) has a horizontal tangent line. (B) Find the profit function P(x). (C) Find the value of x where the graph of P(x) has a horizontal tangent line. ( D) Graph C(x), R(x), and P(x) on the same coordinate system for 0Sx S 1000. Find the break-even points. Find the x-intercepts of the graph of P(x). O Question 14 O Question 15 O A . OB. O C. Q R(X) R(X ) 50000- 50000- O Question 16 C(x) 38680- 33680 23680- 23680- Question 17 10000- P(X) P(X) X 10000- 500 1000 500 1000 500 1000 O Question 18 What are the break-even points? O A. (160,26880) and (629,38480) O Question 19 O B. (240,25267) and (629,34632) O C. (320,29568) and (629,38480) Question 20 O D. (160,26880) and (740,38480) O E. (160,29568) and (629,44252) O Question 21 The x-intercepts of the graph of P(x) occur at x =. (Use a comma to separate answers as needed.) NextSafari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:56 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to... P Assignme... P Quiz CH 4 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:56 AM E Quiz: Quiz CH 4 Question 2 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz The matrix equation is not solved correctly. Expain the mistake and find the correct solution. Assume that the indicated inverses exist. Question list K XA = B, X = AB O Question 1 What is the mistake? Choose the correct answer below. O Question 2 A. The equation should have been multiplied by B instead of A- 1. O B. The matrix A should have been subtracted from both sides of the equation. O Question 3 O c. Mixed the left multiplication property and the right multiplication property. O D. The equation should have been multiplied by X" instead of A- 1 O Question 4 Find the correct solution. X =] Question 5 O Question 6 O Question 7 O Question 8 Question a NextSafari File Edit View History Bookmarks Window V 4\" 0' 3868 / CX) Q 33680 ) 33500 j 2' 23680 D 2368 23680 / \\ D . 10000 1 l 1000 10000 ' 0 Question 19 \\ X x 0 > 0L. 0 500 1000 o 500 1000 0 Question 20 What are the break-even points? 12:} A. (16026880) and (62938480) 0 Question 21 11'] B. (24025267) and (629.34632) Safari File Edit View History Bookmarks Window Help O US Q 8 @ Thu Dec 14 2:55 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le... Sign in to... P Assignme... P Quiz CH 9 Dashboard of Mail - Alz... MATH TE.. ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:55 AM E Quiz: Quiz CH 9 Question 22 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Annual limousine production for the selected years is given in the table below. Question list K (A) Let x represent time (in years) since 1980, and let y Limousines represent the corresponding production of Year Produced limousines. Enter the data in a graphing calculator 1980 2500 O Question 17 and find a cubic regression equation for the data. 1985 600 (B) Let L(x) denote the regression equation found in 1990 part (A) with coefficients rounded to the nearest 100 hundredth. Find L(15) and L'(15). 1995 3400 Question 18 (C) Interpret L(16) and L'(16) in this context. 2000 5200 O Question 19 (A) L(x) = (Use integers or decimals rounded to the nearest hundredth for any numbers in the equation.) O Question 20 (B) L(15 ) ~ L'(15 ) ~ (Type an integer or decimal rounded to the nearest hundred as needed.) O Question 21 (C) Interpret L(16) ~ 3000 in the context of the problem. O A. In 1996 the number of limousines produced was increasing by 3000 per year. Question 22 O B. The number of limousines produced in 1996 was 3000. O C. The number of limousines produced 16 years from now will be 3000. Question 23 Interpret L'(16) ~ 100 in the context of the problem. O A. There will be 100 more limousines 16 years from now. O Question 24 O B. The number of limousines produced 16 years from now will be 100. O C. In 1996 the number of limousines produced was increasing by 100 per year. On The number of limnlicines produced in 1906 was inn Action 25 NextSafari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:54 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to... P Assignme... P Quiz CH 9 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:54 AM E Quiz: Quiz CH 9 Question 18 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Find the marginal revenue function. Question list K R(x) = 8x - 0.05x2 O Question 14 R'(x ) = Question 15 O Question 16 Question 17 O Question 18 O Question 19 O Question 20 Question 21 NextSafari File Edit View History Bookmarks Window Help O US Q 8 @ Thu Dec 14 2:55 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le.. Sign in to.. P Assignme... P Quiz CH 9 Dashboard Mail - Alz... MATH TE... Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:55 AM E Quiz: Quiz CH 9 Question 24 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Question list K If an object moves along the y-axis (marked in feet) so that its position at time x (in seconds) is given by f(x) = 120x - 12x, find the following. (A) The instantaneous velocity function v = f'(x) (B) The velocity when x = 0 and x = 2 sec U Question 1/ (C) The time(s) when v = 0 Question 18 (A) v(x) = O Question 19 (B) The velocity when x = 0 sec is ft/sec. The velocity when x = 2 sec is |ft/sec. (C) The velocity is 0 at x = sec. O Question 20 (Simplify your answer. Use a comma to separate answers as needed.) O Question 21 O Question 22 Question 23 Question 24 Question 25 NextSafari File Edit View History Bookmarks Window Help O US Q 8 0 Thu Dec 14 2:56 AM mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le. Sign in to... P Assignme... P Quiz CH 4 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:56 AM E Quiz: Quiz CH 4 Question 5 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Use row operations to change the matrix to reduced form. Question list K 0 1 5 O Question 1 O Question 2 Fill in the blank entries of the matrix in reduced form. O Question 3 O Question 4 O Question 5 Question 6 O Question 7 O Question 8 Question a NextSafari File Edit View History Bookmarks Window V mylab.pearson.com C G My Grade.. B https://le.. My Grade. B https://le... Sign in to... P Assignme... P Quiz CH 4 Dashboard of Mail - Alz... MATH TE... ox Google T... MATH 2040 B Fall 2023 DONIA Alzoubi 12/14/23 2:56 AM E Quiz: Quiz CH 4 Question 4 of 25 This quiz: 25 point(s) possible This question: 1 point(s) possible Submit quiz Li needs to solve the problem below for homework and decides to use matrices. Which matrix represents the proper set up for the problem? Question list K Tickets to the high school theater production of "Hamilton" cost $20 for adults and $19 for children. If the high school brings in $4415 for a night and 175 tickets are sold, how many adult tickets and children ticket O Question 1 Choose the correct answer below. O Question 2 20 1 175 OA 1 19 4415 O Question 3 20 19 175 OB 4415 O Question 4 20 19 4415 O C. 1 175 Question 5 20 1 4415 OD. 1 19 175 Question 6 O Question 7 O Question 8 Question a Next