Exercise 2-30 Fixed and Variable Costs; Automobile Service; Missing Data (LO 2-1, 2-8) 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 600 mufflers were replaced. Muffler Replacements 500 600 700 a b $42,000 30,000 $72,000 d |- -|Lollos e Total costs: Fixed costs Variable costs Total costs Cost per muffler replacement: Fixed cost Variable cost Total cost per muffler replacement f 1-|- --|| h k m n Required: Fill in the missing amounts, labeled (a) through (o), in the table