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 700 800 900 Total costs Fixed costs $ 68.800 Variable costs 36,800 $ 105.600 Total costs Cost per muffler replacement Fixed cost Variable cost Total cost per muffler replacement