has collected the following data concerning its maintenance costs for the past 6 months. Units Produced Total Cost July 18,150 $37,407 August 32,256 48,384 September 36,288 55,440 October 22,176 38,304 November 40,320 75,096 December 38,304 62,496 (a 1) Compute the variable cost per unit using the high-low method. (Round answer to 2 decimal places, e.g. 2.25.) Variable cost per units (a2) Compute the foxed cost elements using the high-low method. Fixed costs 5