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 $ 100,000 Variable expenses 65,000 Contribution margin 35,000 Fixed expenses 30,100 Net operating income $ 4,900 5. If sales decline to 900 units, what would be the net operating income? (Round "Per Unit" calculations to 2 decimal places.)