[ FUNT FUIT pues une quesLUNS UIS playeru veru. Oslo Company prepared the following contribution format income statement based on a sales volume of 1,000 units (the relevant range of production is 500 units to 1,500 units): Sales Variable expenses Contribution margin Fixed expenses Net operating income $ 85,000 59,500 25,500 20,400 $ 5,100 Foundational 5-4 (Algo) 4. If sales increase to 1,001 units, what would be the increase in net operating income? (Round your answer to 2 decimal place Answer is complete but not entirely correct. $ Increase in net operating income 58.730.00 Foundational 5-13 (Algo) 13. Using the degree of operating leverage, what is the estimated percent increase in net operating income of a 5% increase in unit sales? (Round your intermediate calculations and final answer to 2 decimal places.) Answer is complete but not entirely correct. 2,500.00 % Increase in net operating income 15. Assume that the amounts of the company's total variable expenses and total fixed expenses were reversed. In other words, assume that the total variable expenses are $20,400 and the total fixed expenses are $59,500. Using the degree of operating leverage, what is the estimated percent increase in net operating income of a 5% increase in unit sales? (Round your intermediate calculations and final answer to 2 decimal places.) Answer is complete but not entirely correct. Increase in net operating income 63.33 %