The controller of Sheridan Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs. Total Maintenance Costs Month January February March April May June $3,094 3,516 4,219 Total Machine Hours 4,100 4,688 7,032 9,259 5,860 9,380 5,274 3,750 5,470 (1) Determine the variable-cost components using the high-low method. (Round answer to 2 decimal places e.g. 2.25.) Variable cost per machine hour $ (a2) Determine the fixed cost components using the high-low method. Fixed costs $