I need only answer

Let R(x), C(x), and P(x) be, respectively, the revenue, cost, and profit, in dollars, from the production and sale of x items. If R(x) = 6x and C(x) =0.004x + 1.8x + 50, find each of the following. a) P(x) b) R(50), C(50), and P(50) c) R'(x), C'(x), and P'(x) d) R'(50), C'(50), and P'(50) a) P(x) = (Use integers or decimals for any numbers in the expression.) b) R(50) = $ (Type an integer or a decimal.) C(50) = $ (Type an integer or a decimal.) P(50) = $ (Type an integer or a decimal.) c) R'(x) = (Type an integer or a decimal.) C'(x) = 0 (Use integers or decimals for any numbers in the expression.) P'(x) = (Use integers or decimals for any numbers in the expression.) d) R'(50) = $ per item (Type an integer or a decimal.) c'(50) = $ per item (Type an integer or a decimal.) P'(50) = $ per item (Type an integer or a decimal.)