2. Change all of the numbers in the data area of your worksheet so that it looks like this: 1 Chapter 5: Applying Excel 2 3 Data 4 Unit sales 5 Selling price per unit 6 Variable expenses per unit 7 Fixed expenses 8 40,000 units $70 per unit $28 per unit $1,260,000 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 sales (b) What is the margin of safety percentage? Margin of safety percentage