d Saved 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.) Required: Fill in the missing amounts. Total costs: Sk Fixed costs nt Variable costs Total costs Cost per muffler replacement: Fixed cost Variable cost Total cost per muffler replacement Muffler Replacements 700 800 900 $ 72,800 I 40,800 $ 113,600