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 $ 20,000 13,000 7,000 3,780 $ 3,220 Foundational 5-5 5. If sales decline to 900 units, what would be the net operating income? Net operating income 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 $ 20,000 13,000 7,000 3,780 $ 3,220 Foundational 5-3 3. What is the variable expense ratio? Variable expense ratio % 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 $ 20,000 13,000 7,000 3,780 $ 3,220 Foundational 5-7 7. If the variable cost per unit increases by $1, spending on advertising increases by 51100, and unit sales increase by 120 units, what would be the net operating income? Net operating income 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 $ 20,000 13,000 7,000 3,780 $ 3,220 Foundational 5-1 Required: 1. What is the contribution margin per unit? (Round your answer to 2 decimal places.) Contribution margin per unit