Given the Production Function Q = 36X + 15X2 – 2X3, where Q =
Output and X = Input
Fill in Multiple Blanks
(a) When X = 4, the Marginal Product (MP) is .
(b) When X = 2, the Average Product (AP) is .
(c) Q will be at its maximum when X is .
(d) Diminishing Returns set in when X is .