The controller of Furgee Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs.Month Total Maintenance Costs Total Machine Hours January $2820 320February 3320 470March 3920 620April 4820 570May 3520 520June 5390 720(a)Determine the variable cost components using the high-low method. (Round variable cost to 3 decimal places e.g. 12.250.)Variable cost per machine hour $_____________