The controller of Hall Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs. Total Total Machine Maintenance Costs Month Hours $2817 January 3734 4268 February 3201 3841 6402 March April 8429 4801 3414 May 5335 4930 June 8536 (a1) Determine the variable-cost components using the high-low method. (Round variable cost to 2 decimal places eg. 12.25.) $ Variable cost per machine hour Determine the fixed cost components using the high-low method. (Round answer to o declmal placos o.g. 2,520.) Fixed costs