Consider the following cost function.
a. Find the average cost and marginal cost functions.
b. Determine the average and marginal cost when x = a.
c. Interpret the values obtained in part (b).
C(x) = 0.03x^3 + 0.7x^2 + 20x + 110, 0 ≤ x ≤ 1500, a = 400
a. The average cost function is Ā(x).