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OpenStudy (anonymous):
7. Given the following cost and revenue functions: C(x) = 10x+ 3 and R(x) = 40x - 0.6x^2 (a) Find the marginal cost. (b) Find the marginal revenue. (c) Find the marginal profit. (d) Find all values of x for which marginal profit is zero, and interpret. So far, I have got: a) c'(x) = 10 b) R'(x) = 40 - 1.2x c) P'(q) = -1.2x + 30 I'm not sure what to do with d) and if my marginal cost function is correct.
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