Question 13 Christian Cole has written a self-improvement book. The following are its pricing and cost details: $18.00 per book Selling price Variable cost per unit: Production Selling & administrative Fixed costs: Production Selling & administrative $3.50 1.90 $33,600 per year 15,540 per year What is the cost formula for this operation, where TC = Total cost and x = units sold? OTC = 12.60x 49,140 OTC = 5.40x + 49,140 OTC = 6x + 49,140 OTC = 6.40x + 49,140 OTC = 5.40x - 49,140