1 Chapter 5: Applying Excel 3 Data 4 Unit sales 5 Selling price per unit 6 Variable expenses per unit 7 Fixed expenses 70,000 units 60 per unit 42 per unit 1,008,000 If your formulas are correct, you should get the correct answers to the following questions. (a) What is the break-even in dollar sales? Break-even in dollar S 56,000 (b) What is the margin of safety percentage? n of safety 201% (c) What is the degree of operating leverage? (Round your answer to 2 decimal places.) Degree of operating 3. Using the degree of operating leverage and without changing anything in your worksheet, calculate the percentage change in net operating income if unit sales increase by 20%. ercentage increase in net operating income