Marginal profit. The profit, in thousands of dollars, from the sale of x thousand candles can be estimated by P(x) =2x-0.3x ln x. a) Find the marginal profit, P'(x). b) Find P'(150), and explain what this number represents. c) How many candles (in thousands) should be sold in order to achieve a marginal profit of $750 per thousand candles?

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