Whirly Corporation's contribution format income statement for the most recent month is shown below. Total Per Unit Sales (8,400 wita) $ 260,400 $31.00 Variable expenses 168.000 20.00 Contribution margin 92.400 $ 11.00 Fixed expenses 54.900 Het operating income $ 37.500 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 of the sales volume is 7,400 units? 1. Revised net operating income 2 Revised net operating Income 3. Revised net operating Income