Whirly Corporation's contribution format income statement for the most recent month is shown below: Total $ 226,300 138,700 Per Unit $31.00 19.00 Sales (7,300 units) Variable expenses Contribution margin Fixed expenses $ 12.00 87,600 55,700 31,900 $ 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 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 6,300 units? 1 Revised net operating income 2. Revised net operating income 3 Revised net operating income