The manager of Trusty Car Inspection reviewed the monthly operating costs for the past year. The costs ranged from $4,300 for 1,300 inspections to $3,900 for 900 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.) Variable cost per inspection Requirements 1. Use the high-low method to calculate the variable cost per inspection. 2. Calculate the total fixed costs. 3. Write the equation and calculate the operating costs for 1,000 inspections. 4. Draw a graph illustrating your total cost under this plan. Show the costs at 900, 1,000, and 1,300 inspections. (Use the high-low method for all calculations.) Print Done