The total profit (in dollars) from the sale of x espresso machines is?

P(x)= 60x-0.7x^2-240

Evaluate the marginal profit at the following values:

(A) P’(200)=
(B)P’(350)=

I tried to plug in but got the wrong answers….

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One Response to “The total profit (in dollars) from the sale of x espresso machines is?”

  1. MsMath Says:

    P(x) = 60x – 0.7x^2 – 240
    Take the derivative.
    P’(x) = 60 – 0.7(2)x
    P’(x) = 60 – 1.4x

    Now plug in your values.
    P’(200) = 60 -1.4(200) = 60-280 = -220
    P’(350) = 60 -1.4(350) = 60-490 = -430