Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follow Sales Variable expenses Contribution margin Fixed expenses Net operating income Required: Amount $ 138,000 55,200 Percent of Sales 100% 82,800 40 60% 21,000 $ 61,800 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 26% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 26% increase in unit sales. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Construct a new contribution format income statement for the company assuming a 26% increase in unit sales. Engberg Company Contribution Income Statement Amount Percent of Sales % % 0 0% $ 0