Whirly Corporation's contribution format income statement for the most recent month is shown ned: Required: (Consider each case independenily): 1. What would be the revised net operating incotne per month if the sales volume increases by 100 units? 2 What would be the rewised net operating incone per month if the sales volume decreases by 100 units? 3. What would be the reviced net operatine ineome per month if the salec volume is 9,000 units