Answer Happy

The graph of the total profit P(x) (in dollars) from the sale of x cordless electric screwdrivers is shown to the right. (A) Write a brief verbal description of the graph of the marginal profit function y=P′(x), including a discussion of any x intercepts. (B) Sketch a possible graph of y=P′(x). (A) On what interval(s) is the marginal profit function P′(x) positive? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. (Type your answer using interval notation. Use a comma to separate answers as needed.) B. There is no solution. On what interval(s) is the marginal profit function P′(x) negative? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. (Type your answer using interval notation. Use a comma to separate answers as needed.) B. There is no solution. At what point(s) is the marginal profit function P′(x) equal to 0 ? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. x= (Use a comma to separate answers as needed.) B. There is no solution. (B) Sketch a possible graph of y=P′(x). Choose the correct graph below. A. B. C. D. (D) Time Remaining: 01:09:25