Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income sta Sales Variable expenses Contribution margin Fixed expenses Net operating income Amount $ 142,000 56,800 85,200 25,000 $ 60,200 Percent of Sales 100% 40% 60% Required: 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 15% increase in unit sales 3. Construct a new contribution format income statement for the company assuming a 15% 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 15% increase in unit sales, Engberg Company Contribution Income Statement Amount Percent of Sales Sales 100% Variable expenses 40% Contribution margin 0 60% Fored expenses Net operating income $ 0