Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (7,489 units) $ 229,486 $ 31.96 Variable expenses 148,688 19.88 Contribution margin 88,888 $ 12.88 Fixed expenses 55,988 Net operating income $ 32,988 Required: (Consider each case independently): 1. What would be the revised net operating income per month ifthe 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 6,400 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income