The manager of Able Car Inspection reviewed his monthly operating costs for the past year. His costs ranged from $4,000 for 1,000 inspections to $3,600 for 600 inspections.Requirements1. Calculate the variable cost per inspection.2. Calculate the total fixed costs.3. Write the equation and calculate the operating costs for 800 inspections.4. Draw a graph illustrating your total cost under this plan. Label the axes, and show your costs at 600, 800, and 1,000 inspections.