Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (7,000 units) Total Per Unit $ 231,000 $ 33.00 Variable expenses 133,000 Contribution margin 98,000 19.00 $ 14.00 Fixed expenses Net operating income 55,700 $ 42,300 Required: (Consider each case independently): 1. What would be the revised net operating income per month if the sales volume increases by 80 units? 2. What would be the revised net operating income per month if the sales volume decreases by 80 units? 3. What would be the revised net operating income per month if the sales volume is 6,000 units? Answer is complete but not entirely correct. 1. Revised net operating income $ 44,200 2. Revised net operating income $ 42,800 3. Revised net operating income $ 29,500