Whirly Corporation's contribution format income statement for the most recent month is shown below: Total Per Unit 33.00 Sales (8,3000 units) Variable expenses 273,900 157,700 19.00 Contribution margin 14.00 116,200 Fixed expenses 54,300 Net operating income 61,900 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 7,300 units? 1 Revised net operating income 2 Revised net operating income 3. Revised net operating income