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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Answer 1 · 2017-02-12T05:42:43

see below.

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.