Suppose P(x) represents the profit on the sale of x vinyl records. If P(1,000) = 4,000 and P'(1,000) = -2, what do these values tell you about the profit? P(1,000) represents the profit on the sale of vinyl records is $ . P'(x) represents the profit is decreasing at the rate of $ vinyl records. P(1,000) = 4,000, so the profit on the sale of --Select as a function of x. P'(1,000) = -2, so the per additional vinyl record sold. Your monthly profit (in dollars) from selling magazines is given by P=7x+ √√x, where x is the number of magazines you sell in a month. If you are currently selling x = 50 magazines per month, find your profit and your marginal profit. (Round your answers to two decimal places.) profit marginal profit Interpret your answers. per additional magazine Your current profit is $ month. per month, and would increase at a rate of $ per additional magazine sold per