Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Sales 1000 408 601 Amount $ 142,000 56.800 85,200 16,000 $ 69,200 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 15% Increase in sales. 3. Construct a new contribution format income statement for the company assuming a 15% increase in sales. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3