Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Sales (7,400 units) Variable expenses Contribution margin Fixed expenses Net operating income $ 236, 800 133,200 103,600 54,800 $ 48,800 Per Unit 32.00 18.00 14.00 Required (Consider each case independently) 1. What would be the revised net operating income per month if the sales volume increases by 50 units? 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 6,400 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income