The Chapter 1 Form worksheet is to be used to create your own worksheet version of Exhibit 1-Z in the text. 1. Now change all of the dollar amounts in the data area of your worksheet so that it looks like this 1Chapter 1: Applying Excel 2 3 Data 4 Sales 5 Variable costs $35,500 Cost of goods sold Variable selling Variable administrative $ 23,000 2,300 2,100 7 9 Fixed costs: 10 Fixed selling 11Fixed administrative 2,500 1,500 If your formulas are correct, you should get the correct answers to the following questions (a) What is the gross margin now? Gross margin $ 12,500 (b) What is the net operating income now? Net operating income$ 8,100 (c) What is the contribution margin now? Contribution margin $ 5,170