The following information relates to mixed costs, using miles as the activity level. Miles Driven Total Cost Miles Driven Total Cost July 8,005 $14,195 September 8,341 $14,700 August 7,505 13,518 October 8,200 14,495 Determine the variable costs per unit using the high-low method for this mixed cost. (Round answer to 2 decimal places, e.g. 2.25.)