Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Sales Variable expenses Contribution margin Fixed expenses Net operating income Amount $ 135,000 54,000 81,000 23,000 $ 58,000 Percent of Sales 1002 403 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 12% increase in unit sales, 3. Construct a new contribution format income statement for the company assuming a 12% 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 assming a 12% increase in unit sale Percent of Sales Engberg Company Contribution Income Statement Amount Sales $ 156,600 Variable expenses 62,640 Contribution margin 93,960 Fixed expenses 23,000 Net operating income $ 70,960 100% 40% 60%