Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (8,780 units Variable expenses Contribution margin Fixed expenses Net operating income Total $ 287,100 156,600 130,500 54,600 $ 75,900 Per Unit $ 33.00 18.00 $ 15.00 Required: Consider each case independently): 1 What would be the revised net operating income per month if the sales volume increases by 90 units? 2. What would be the revised net operating income per month if the sales volume decreases by 90 units? 3. What would be the revised net operating income per month if the sales volume is 7700 units? Answer is not complete. 1 $ 77,050 2 Revised net operating Income Revised not operating income Revised not operating lincome 13