need help with all requirements

Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format Income statement follows Sales Variable expenses Contribution margin Fixed expenses Net operating Income Amount 5 10,000 32,000 48,000 38,000 3 10,000 Percent of Sales 100% 40 GOK Required: 1 What is the companys 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