Sebastian Muffler, Inc. operates an automobile service facility. The table below shows the cost incurred during a month when 500 mufflers were replaced. Number of Muffler Replacements 400 500 600 Total costs: Fixed costs Variable costs A B $ 8,400 9,000 $17,400 D Total costs E F = a = b = Ula H0 Cost per muffler replacement: Fixed cost Variable cost G H I J K L Total cost per muffler replacement M N Required: Fill in the missing amounts, labeled A through O, in the table above. (Round your answers to 2 decimal places.)