B 19. Maximum revenue and profit. A company manufactures and sells & smartphones per week. The weekly price-demand and cost equations are, respectively, P = 500 - 0.4x and C(x) = 20,000 + 20x (A) What price should the company charge for the phones. and how many phones should be produced to maximize the weekly revenue? What is the maximum weekly revenue? (B) What is the maximum weekly profit? How much should ht the company charge for the phones, and how many phones should be produced to realize the maximum weekly profit