Mighty Muffler, Inc., operates an automobile service facility. The table below shows the cost incurred during a month when 600 mufflers were replaced. Number of Muffler Replacements 500 600 700 Total costs: Fixed costs Variable costs $ 9,000 B 36,000 E $45.000 Total costs Cost per muffler replacement: Fixed cost Variable cost Total cost per muffler replacement Required Fill in the missing amounts, labeled A through O, in the table