Whirly Corporation's contribution format income statement for the most recent month is shown below: Per Unit $ 30.00 19.00 $ 11.00 Sales (8,700 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 261,000 165,300 95,700 55,200 40,500 $ Required: (Consider each case independeritly): 1. Revised net operating income 2 Revised net operating income 3 Revised net operating income 1. What would be the revised net operating income per month if the sales volume increases by 100 units? 2. What would be the revised net operating income per month if the sales volume decreases by 100 units? 3. What would be the revised net operating income per month if the sales volume is 7,700 units?