The controller of Carla Vista Industries has collected the following monthly cost data for use in analyzing the behavior of maintenance costs. (a1) Determine the unit variable costs using the high-low method for this mixed cost. (Round answer to 2 decimal places eg. 2.25.) Variable cost per machine hour $ Determine the unit variable costs using the high-low method for this mixed cost. (Round answer to 2 decimal ploces eg. 2.25.) Variable cost per machine hour eTextbook and Media Attempts: 0 of 2 used (22). Determine the fixed costs using the high-low method for this mixed cost