Mi Tierra Driving School charges $720 per student to prepare and administer written and driving tests. Variable costs of $360 per student include trainers' wages, study materials, and gasoline. Annual fixed costs of $100,800 include the training facility and fleet of cars. Read the requirements LOADING... . Question content area bottom Part 1 Requirement 1. For each of the following independent situations, calculate the contribution margin per unit and the breakeven point in units: Begin by showing the formula for contribution margin per unit and then enter the amounts to calculate the contribution margin per unit for each situation. (Abbreviation used: CM = contribution margin.) - = CM per unit Part 2 Situation a. - = Part 3 Situation b. - = Part 4 Situation c. - = Part 5 Situation d. - = Part 6 Now select the labels to show the formula for breakeven point in units and then enter the amounts to calculate the breakeven point in units for each situation. (Complete all answer boxes. Abbreviation used: CM = contribution margin.) ( + ) = Required sales in units Part 7 Situation a. ( + ) = Part 8 Situation b. ( + ) = Part 9 Situation c. ( + ) = Part 10 Situation d. ( + ) = Part 11 Requirement 2. Compare the impact of changes in the sales price, variable costs, and fixed costs on the contribution margin per unit and the breakeven point in units. First, compare the impact of changes in the sales price, variable costs, and fixed costs on the contribution margin per unit. The contribution margin decreases does not change increases when the sales price decreases. The contribution margin decreases does not change increases when variable costs decrease. The contribution margin