Exercise 11-5 The controller of Hall Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs. Total Maintenance Costs Total Machine Hours Month January February March April May June $3,620 4,120 5,280 6,712 4,600 6,860 6,300 7,200 10,800 14,220 9,000 14,400 Determine the variable-cost components using the high-low method. (Round variable cost to 2 decimal places e.g. 12.25.) Variable cost per machine hour Determine the fixed cost components using the high-low method. (Round answer to 0 decimal places e.g. 2,520.) Fixed costs