Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit s30.00 267,000 178,000 Sales (8,900 units) Variable expenses 20.00 Contribution margin s 10.00 89,000 54,200 Fixed expenses $ 34,800 Net operating income Required (Consider each case independently) 1. What would be the revised net operating income per month if the sales volume increases by 100 units? 2. What would be the revised net operating income per month if the sales volume decreases by 100 units? 3. What would be the revised net operating income per month if the sales volume is 7,900 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income