The profit (in dollars) from the sale of x lawn mowers is P(x) = 50x - 0.05x^2 - 450. How to find the marginal average profit at a production level of 20 mowers?

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1 Answer
Feb 12, 2017

see below.

Explanation:

Answer A is an interpretation of P'(20) (Marginal Profit)

Answer B is an interpretation of barP'(20) (Marginal Average Profit)

Answer C is an interpretation of barP(20) (Average Profit)

Calculate:

P'(20) = 48, so A is not correct

barP'(20) = 1.075 so B is approximately correct.

By the way, barP(20) = 26.5, so C is not correct.