Carla Vista Corp. has collected the following data concerning its maintenance costs for the past 6 months.

		Units Produced				Total Cost
July			20,180				$44,058
August			35,872				53,808
September			40,356				61,655
October			24,662				46,334
November			44,840				83,514
December			42,598				69,502

Compute the variable cost per unit using the high-low method. (Round answer to 2 decimal places, e.g. 2.25.)

Variable cost per unit

$