! 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 $105,000 73,500 31,500 27, 720 $ 3,780 7. If the variable cost per unit increases by $1, spending on advertising increases by $1,950, and unit sales increase by 290 units, what would be the net operating income? Net operating income