Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Sales 100% 40 608 Amount $ 121,000 48,400 72,600 23,000 $ 49,600 Sales Variable expenses Contribution margin Fixed expenses Net operating income 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 assuming a 12% increase in unit sales. Engberg Company Contribution Income Statement Amount Sales $ 141,570 Percent of Sales % % 141,570 0 % $ 141,570