need help

Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement foll Sales Variable expenses Contribution margin Fixed expenses Net operating income Amount $ 131,000 52,400 78,600 22,000 $ 56,600 Percent of Sales 100% 40% 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 16% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 16% increase in unit sales