long-run total cost function by plotting the minimum total costs associated with producing 9 and 18 pizzas, based on your answers to the previous questions. 90 81 Long-Run Cost 72 63 54 COST (Dollars) 45 36 27 18 9 0 + + H 0 3 6 9 12 15 18 21 24 27 30 QUANTITY (Pizzas per hour)