EXERCISE 3-1 Preparing a Contribution Format Income Statement LO 3-1 Whirly Corporation's most recent income statement is shown below Total $350,000 200,000 150,000 135,000 $15,000 Per Unit $35.00 20.00 $15.00 Net operating Income.. . . Required Prepare a new contribution format income statement under each of the following conditions (consider each case independently) 1. The sales volume increases by 100 units. 2. The sales volume decreases by 100 units 3. The sales volume is 9,000 units