6. Barakat's Burritos is a burrito truck servicing the city of Detroit. Barakat sells burritos for $5.50 apiece and has variable expenses of $1.50 per unit, and Barakat spends $2,000 per month in fixed expenses. a. How much would Barakat's Burritos have to sell in units to have net operating income of $10,000 ? b. What would Barakat's Burritos' margin of safety be if it had sales of 2,500 units