4 1 points eBook Print Referances Whirly Corporation's contribution format income statement for the most recent month is shown below Sales (8,400 units) Variable expenses Contribution margin Fixed expenses tet operating income Required: (Consider each case independently): Total $252,000 168,000 Per Unit $30.00 84,000 20.00 $10.00 55,800 5 28,200 1. What would be the revised net operating income per month if the sales volume increases by 40 units? 2. What would be the revised net operating income per month if the sales volume decreases by 40 units? 3. What would be the revised net operating income per month if the sales volume is 7.400 units? 1. Revised net operating income 2. Revised net operating Income 3. Revised net operating income