Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Sales (7,600 units) Variable expenses Contribution margin Fixed expenses Net operating income Required: (Consider each case independently): Per Unit $ 228,000 152,000 76,000 $ 30.00 20.00 $ 10.00 55,400 $ 20,600 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 6,600 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income