Inventory Cost - A famous racquetball distributor's major problem is keeping up with the demand for racquetballs. Balls are purchased periodically from a sporting goods manufacturer. The annual cost of purchasing, owning, and maintaining the inventory of racquetballs is described by the function C = (450,000/q) +0.20 q + 2,000,000 where q denotes the order size (in dozens) and C denotes the annual inventory cost in dollars. a. Determine the order size q that minimizes annual inventory cost C. b. What is the minimum inventory costs C* expected to equal to