Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Sales Variable expenses Contribution margin Fixed expenses Net operating income. Required: Amount $ 146,000 Sales 58,400 100% 40 87,600 608 17,000 $ 70,600 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 19% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 19% 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 19% increase in unit sales.