2. Change all of the numbers in the dsts area of your worksheet so that it looks like this: Chapter 5: Applying Excel 3 Data 4 Unit sales 5 Selling price per unit 8 Variable expenses per unit 7 Fixed expenses 0,000 units 20 per unit 512 per unit If your formulas are correct, you should get the correct answers to the following questions. (a) What is the break-even in dollar sales? (b) What is the margin of safety percentage? (c) What is the degree of operating leverage? (Round your answer to 2 decimal places.) ree of operating leverage 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%. increase in net operating income