Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Amount Sales Sales $ 80, 000 100% Variable expenses 32 , 000 408 Contribution margin 48 , 000 60% ok Fixed expenses 38, 000 Net operating income $ 10 , 000 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 5% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 5% increase in unit sales. Complete this question by entering your answers in the tabs below. nces Required 1 Required 2 5 Required 3 Using the degree of operating leverage, estimate the impact on net operating income of a 5% increase in unit sales. (Do not round intermediate calculations.) Net operating income by