Mighty Muffler, Inc. operates an automobile service facility that specializes in replacing mufflers on compact cars. The following table shows the costs incurred during a month when 800 mufflers were replaced. (Round "cost per muffler" to 2 decimal places.)

Number of Muffler Replacements 800 700 900 Total costs: Fixed costs $ 72,800 72,800 72,800 Variable costs 40,800 Total costs $ 113,600 Cost per muffler replacement: Fixed cost Variable cost Total cost per muffler replacement