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 20,000 units $30 per unit $15 per unit $240,000 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