Required information [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 5. If sales decline to 900 units, what would be the net operating income? 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? units Break-even point