Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit Variable expenses Sales (7,300 units) Contribution margin $ 248,200 146,000 102,200 $ 34.00 20.00 $ 14.00 Fixed expenses 55,000 Net operating income $ 47,200 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 30 units? 2. What would be the revised net operating income per month if the sales volume decreases by 30 units? 3. What would be the revised net operating income per month if the sales volume is 6,300 units? 1. Revised net operating income 2. Revised net operating income 3. Revised net operating income