The profit in dollars from the sale of x expensive watches is P(x) = 0.06x – 3x + 7x° -5000. 0.7 Find the marginal profit when (a) x 300, (b) x = 2000, (c) x = 6000, and (d) x = 10,000. (a) When x 300, the marginal profit is $ . (Round to the nearest integer as needed.)

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