The controller of Cullumber Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs Total Total Machine Hours Month Maintenance Costs $2,730 January 330 February 3,030 380 3,630 March 530 4,530 April 660 ay 3,230 530 June 5,450 730 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 Determine the fixed cost components using the high-low method. $ Total fixed costs