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

	Total	Per Unit
Sales (8,800 units)	$ 290,400	$ 33.00
Variable expenses	158,400	18.00
Contribution margin	132,000	$ 15.00
Fixed expenses	54,700
Net operating income	$ 77,300

1. What would be the revised net operating income per month if the sales volume increases by 50 units?

2. What would be the revised net operating income per month if the sales volume decreases by 50 units?

3. What would be the revised net operating income per month if the sales volume is 7,800 units?