Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (8,100 units) Variable expenses Contribution margin Fixed expenses Net operating income Total 251,100 145,800 105,300 54,900 Per Unit 31.00 18.00 $13.00 25 points $ 50,400 eBook Required Consider each case independently): Hint 1. What would be the revised net operating income per month if the sales volume increases by 60 units? 2. What would be the revised net operating income per month if the sales volume decreases by 60 units? 3. What would be the revised net operating income per month if the sales volume is 7,100 units? Print References 1. Revised net operating income 2. Revised net operating income 3.Revised net operating income