Exercise 2-1 (Algo) The Effect of Changes in Activity on Net Operating Income [LO2-1) Whirly Corporation's contribution format income statement for the most recent month is shown below: ed Sales (7,800 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 265,200 156,000 109,200 55,600 $ 53,600 Per Unit $ 34.00 20.00 $ 14.00 Required: (Consider each case independently): 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 6.800 units