[The following information applies to the questions displayed below.) 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 $ 80,000 52,000 28,000 21,840 $ 6,160 Required: 1. What is the contribution margin per unit? (Round your answer to 2 decimal places.) Contribution margin per unit 2. What is the contribution margin ratio? % Contribution margin ratio 3. What is the variable expense ratio? Variable expense ratio % 4. If sales increase to 1,001 units, what would be the increase in net operating income? (Round your answer to 2 decimal places.) Increase in net operating income 5. If sales decline to 900 units, what would be the net operating income? A Net operating income 6. If the selling price increases by $2 per unit and the sales volume decreases by 100 units, what would be the net operating income? Net operating income 7. If the variable cost per unit increases by $1, spending on advertising increases by $1,700, and unit sales increase by 240 units, what would be the net operating income? Net operating income 8. What is the break-even point in unit sales? Break-even point units