A company manufactures and sells x cellphones per week. The weekly price-demand and cost equations are given below.

p = 400 - 0.1x and C(x) = 20,000 + 135x

(A) What price should the company charge for the phones, and how many pho should be produced to maximize the weekly revenue? What is the maximum weekly revenue?
The company should produce ______ phones each week at a price of $ _________.