L 10 portu Sapped Harit Pris cences Whirly Corporation's contribution format income statement for the most recent month is shown below Total Sales (8,480 units) Variable expenses Contribution margin Fixed expenses Per Unit $ 30.00 19.00 $ 252,000 159,600 92,400 $ 11.00 54,500 $37,600 Net operating income Required: (Consider each case independently 1. What would be the revised net operating income per month if the sales volume increases by 50 unts? 2. What would be the revised net operating income per month if the sales volume decreases by 50 units? 3. What would be the revised net operating income per month if the sales volume is 7,400 units? 1. Revised not operating income 2. Revised not operating income 3. Revised net operating income