Whirly Corporation's contribution format income statement for the most recent month is shown below Total $ 260,400 159,600 Per Unit $31.00 19500 Sales (8,400 units) Variable expenses Contribution margin Fixed expenses Net operating income $ 12.09 100,880 $5.000 45,800 Required: (Consider each case independently) 1. What would be the revised net operating income per month if the sales volume increases by 100 units? 2. What would be the revised net operating income per month if the sales volume decreases by 100 units? 3. What would be the revised net operating income per month if the sales volume is 7400 units? 1 Revised net operating income 2. Revised net operating income 3. Revised net operating income