A consulting firm, using statistical methods, provided a veterinary clinic with the cost equation C(x) = 0.00048(x - 300)3 + 228,000 100 S x S 1,000 C(X) where C(x) is the cost in dollars for handling x cases per month. The average cost per case is given by C(x) = . Complete parts (A) through (C) X ... (A) Write the equation for the average cost function C. C(x) =