The graph of the total profit P(x) (in dollars) from the sale of x cordless electric screwdrivers

Question:

The graph of the total profit P(x) (in dollars) from the sale of x cordless electric screwdrivers is shown in the figure.

P(x) 40,000 20,000 0 - 20,000 - 40,000 500 1,000

(A) Write a brief 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). 

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