(27 Let R(x), C(x), and P(x) be, respectively, the revenue, cost, and profit, in dollars, from the production and 122 sale of x items. If R(x) = 4x and C(x) = 0.004x + 1.5x + 50, find each of the following. a) P(x) po b) R(150), C(150), and P(150) c) R'(x), C'(x), and P' (x) ite d) R'(150), C'(150), and P'(150) a) P(x) = (Use integers or decimals for any numbers, in the expression.)