I need help solving a Calculus problem. The problem is as follows: C(x) = 100 + 7x - x^2 + 8x^3. Find the marginal cost when x = 8

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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A: Solution is given below:

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Q: 1. Find two positive numbers whose product is 100 and whose sum is a minimum.

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Q: what is the marginal revenue function at x=1?

A:

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A: Model the given problem as below.

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Q: I am confused how to find the critical point

A: To find the critical point you need the step 2:

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Q: Suppose that the marginal revenue for a company manufacturing coffee machines is given by 100−0.5x…

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