Whirly Corporation's contribution format income statement for the most recent month is shown below Sales (7,200 units) Variable expenses Fixed expenses Contribution margin Net operating income Required: Total $ 237,600 144,000 93,600 55,100 $ 38,500 Per Unit $ 33.00 20.00 $ 13.00 (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 6,200 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income