Whirly Corporation's contribution format income statement for the most recent month is shown below: Sales (8,000 units) Variable expenses Total $272,000 Per Unit $ 34.00 19.00 $ 15.00 152,000 Contribution margin 120,000 Fixed expenses 55,500 Net operating income $ 64,500 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 7,000 units? 1. Revised net operating income 2. Revised 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 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 7,000 units? 1. Revised net operating income 2. Revised net operating income. 3. Revised net operating income