Saved Whirly Corporation's contribution format income statement for the most recent month is shown below. Sales (8,600 units) Variable expenses Contribution margin Fixed expenses Net operating income Required: (Consider each case independently): Total $ 275,200 163,400 111,800 55,400 Per Unit $ 32.00 19.00 $ 13.00 $ 56,400 1. What would be the revised net operating income per month if the sales volume increases by 80 units? 2. What would be the revised net operating income per month if the sales volume decreases by 80 units? 3. What would be the revised net operating income per month if the sales volume is 7,600 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income