2. Change all of the numbers in the data area of your worksheet so that it looks like this: 12 A Chapter 6: Applying Excel B 3 st 4 Data Unit sales 5 Selling price per unit 40,000 units $ 70 per unit 6 Variable expenses per unit $ 28 per unit $ 7 Fixed expenses 1,512,000 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 %