The manager of Quality Car Inspection reviewed the monthly operating costs for the past year. The costs ranged from $4,500 for 1,000 inspections to $4,100 for 800 inspections. Read the requirements. Requirement 1. Use the high-low method to calculate the variable cost per inspection. Select the formula and enter the amounts to calculate the variable cost per inspection. (Round to the nearest cent.) Total mixed cost + Mixed cost per unit = Variable cost per inspection = >>>>