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): f the variable cost per unit increases by $1, spending on advertising increases by $1,800, and unit sales increase by 260 units, what uld be the net operating income? (Round "Per Unit" calculations to 2 decimal places.) 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 $33,210 and the total fixed expenses are $49,500. Using the degree of operating everage, 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.)