BE18.5 (LO 2), AP Markowis Corp. has collected the following data concerning its maintenance costs for the past 6 months. Determine variable- and fixed cost elements using the high-low method. Units Produced Total Cost July 18.000 $36,000 August 32,000 48,000 September 36,000 55,000 October 22,000 38,000 November 40,000 74.500 December 38,000 62,000 Compute the variable- and fixed-cost elements using the high-low method