12. The Central Publishing Company is about to publish its first reference book in mana gerial economics. It is now in the process of estimating costs. It expects to produce 10,000 copies during its rst year. The following costs have been estimated to correspond to the expected copies. a. Paper stock $3,000 b. Typesetting $15,000 c. Printing $50,000 d. Art {including graphs} $0,000 e. Editing $20,000 f. Reviews $3,000 g. Promotion and advertising $12,000 h. Binding $22,000 i. Shipping $10,000 In addition to the preceding costs, it expects to pay the authors a 13 percent royalty and its salespeople a 3 percent commission. These percentages 1will be based on the publisher's price of $48 per book. Some of the preceding costs are fixed and others are variable. The average variable costs are expected to be constant. Altl'lough 10,000 copies is the projected volume, the book could sell anywhere between 0 and 20,000 copies. Using the preceding data, a. 1it'll-Frite equations for total cost, average total cost, average variable cost, and marginal cost. b. Draw the cost curves for quanties from 0 to 20,000 {in intervals of 2,000]