Whirly Corporations contribution format income statement for the most recent month is shown below:

total Per unit

sales (10,000 units) 350,000 35.00

variable expenses 200,000 20.00

contribution margin 150,000 15.00

fixed expenses 135,000

net operating income 15,000

(consider each case independently):

1. What would be the revised net operating income per month if the sales volume increases by 100 units?
2. What would be the revised net operating income per month if the sales volume decreases by 100 units?
3. what would be the revised net operating income per month if the sales volume is 9,000 units?