2. Using the high-low method, what is the variable cost per unit to ship air conditioner? 3. What is the fixed cost of shipping air conditioners? 8. If the air conditioners have an average sales price of $ 5000, variable manufacturing costs are $ 2500 per unit, variable manufacturing overhead is $ 500 per unit, and variable selling and administration costs( excluding shipping) are $ 200, what is the contribution margin per unit? I 11. By how much would the total contribution margin decrease in august if Philips decides to offer its customers a 5% price discount on the seven units