Engberg Company instals lawn sod in home yards. The company' s most recent monthly contribution format income statement follows Percent Sales Variable expensos $148,000 100% 40% 60% Cor ensos $148,000 f Sales Contibution margin88,800 16,000 S 72,800 Flxed expenses Net operating income Required: 1. Compute the company's degree of operating leverage. (Round your answer to 2 decimal places.) 2. Using the degree of operating leverage, estimate the impact on net operating income of a 20% increase in sales . (Round your intermediate ealculations to 2 decimal places. Round calculations to 2 decimal places. Round your percentage answer to 2 decimal places (e 1234 should be entered as 1 3. Construct a new contribution format income statement for the company assuming a 20% increase in sales