Oriole Corp. has collected the following data concerning its maintenance costs for the past 6 months. Units Produced Total Cost July 19,800 $39,600 August 35,200 52,800 September 39,600 60,500 October 24,200 41,800 November 44,000 81,950 December 41,800 68,200 (a1) Compute the variable cost per unit using the high-low method. (Round answer to 2 decimal places, e.g. 2.25.)