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 $ 70,000 Variable expenses 38,500 Contribution margin 31,500 Fixed expenses 23,310 Net operating income $ 8,190 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