Check my work Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (7,900 units) Total $ 276,500 Variable expenses 150,100 Per Unit $ 35.00 19.00 Contribution margin 126,400 $ 16.00 Fixed expenses 54,200 Net operating income $ 72,200 Required: ht ences (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 70 units? 2. What would be the revised net operating income per month if the sales volume decreases by 70 units? 3. What would be the revised net operating income per month if the sales volume is 6,900 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income