Whirly Corporation's contribution format Income statement for the most recent month is shown below: Sales (8,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 240,000 152,000 88,000 55,300 $ 32,700 Per Unit $ 30.00 19.00 $ 11.00 Required: (Consider each case Independently): 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 7000 units? 1. Revised not operating Income 2. Revised not operating income 3. Revised net operating income