points eBook Hint Print References Check my work Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit Sales (8,700 units) $ 269,700 $ 31.00 Variable expenses 156,600 18.00 Contribution margin 113,100 $ 13.00 Fixed expenses 54,600 Net operating income $ 58,500 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 70 units? 2. What would be the revised net operating income per month if the sales volume decreases by 70 units? 3. What would be the revised net operating income per month if the sales volume is 7,700 units? 2. Revised net operating income 1. Revised net operating income 3. Revised net operating income