In: Math
Solve the problem.
Let C(x) be the cost function and R(x) the revenue function.
Compute the marginal cost, marginal revenue, and the marginal
profit functions.
C(x) = 0.0004x3 - 0.036x2 + 200x +
30,000
R(x) = 350x
Select one:
A. C'(x) = 0.0012x2 - 0.072x + 200
R'(x) = 350
P'(x) = 0.0012x2 - 0.072x - 150
B. C'(x) = 0.0012x2 + 0.072x + 200
R'(x) = 350
P'(x) = 0.0012x2 + 0.072x + 150
C. C'(x) = 0.0012x2 - 0.072x + 200
R'(x) = 350
P'(x) = -0.0012x2 + 0.072x + 150