$[$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 $ $55,000$

Variable expenses $33,000$

Contribution margin $22,000$

Fixed expenses $14,960$

Net operaContribution Margin $22,000$

Sales Volume $1,000$

Contribution Margin Per Unit $22$

$3.$ What is the variable expense ratio?

$4.$ If sales increase to $1,001$ units, what would be the increase in net operating income?

$5.$If sales decline to $900$ units, what would be the 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?

$7.$ If the variable cost per unit increases by $$1,$ spending on advertising increases by $$1,450,$ and unit sales increase by $190$ units, what would be the net operating income?

$8.$ What is the break$-$even point in unit sales?

$9.$What is the break$-$even point in dollar sales?

$10.$How many units must be sold to achieve a target profit of $$13,200?$

$11.$What is the margin of safety in dollars? What is the margin of safety percentage?

$12.$ What is the degree of operating leverage?

$13.$Using the degree of operating leverage, what is the estimated percent increase in net operating income that would result from a $5\%$ increase in unit sales?

$14.$Assume that the amounts of the company$$s total variable expenses and total fixed expenses were reversed. In other words, assume that the total variable expenses are $$14,960$ and the total fixed expenses are $$33,000.$ Under this scenario and assuming that total sales remain the same, what is the degree of operating leverage?

$15..$ Assume that the amounts of the company$$s total variable expenses and total fixed expenses were reversed. In other words, assume that the total variable expenses are $$14,960$ and the total fixed expenses are $$33,000.$ Using the degree of operating leverage, what is the estimated percent increase in net operating income of a $5\%$ increase in unit sales?