Determine fund and are costs using the high-low the and prepare graph E18.5 (LO 1, 2) The controller of Hall Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs Total Total Month Maintenance Costs Machine Hours January $2,640 3.500 February 3,000 4.000 March 3.600 6,000 April 4,500 7.900 May 3.200 5.000 June 4,620 8.000 Instructions a. Determine the fixed- and variable-cost components using the high-low method