Suppose P(x) represents the profit on the sale of x Blu-ray discs. If P(1,000) = 1,000 and P'(1,000) = -4, what do these values tell you about the profit? P(1,000) represents the profit on the sale of Blu-ray discs. P(1,000) = 1,000, so the profit on the sale of Blu-ray discs is $ . P'(x) represents the -Select-- v as a function of x. P'(1,000) = -4, so the profit is decreasing at the rate of $ per additional Blu-ray disc sold.Calculate BY simplify your answer. HINT [See Examples 1 and 2.] dx 1 dy : dx x X X