Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (7,200 units) Variable expenses Contribution margin Total $ 230,400 Per Unit $ 32.00 136,800 93,600 19.00 $ 13.00 55,600 Fixed expenses Net operating income Required: (Consider each case independently): $ 38,000 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 6,200 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income