Sales Variable expenses Contribution margin Fixed expenses Net operating income Required: Amount $ 129,000 Percent of Sales 100% 51,600 77,400 40 60% 20,000 $ 57,400 1. What is the company's degree of operating leverage? 2. Using the degree of operating leverage, estimate the impact on net operating income of a 21% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 21% increase in unit sales. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Using the degree of operating leverage, estimate the impact on net operating income of a 21% increase in unit sales. Note: Round your intermediate calculations to 2 decimal places. Round your percentage answer to 2 decimal places (i.e .1234 should be entered as 12.34). Net operating income by < Required 1 % Required 3 > Ch