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

	Total			Per Unit
Sales (8,300 units)	$	282,200		$	34.00
Variable expenses		157,700			19.00
Contribution margin		124,500		$	15.00
Fixed expenses		54,300
Net operating income	$	70,200

Required:

(Consider each case independently):

1. What would be the revised net operating income per month if the sales volume increases by 90 units?

2. What would be the revised net operating income per month if the sales volume decreases by 90 units?

3. What would be the revised net operating income per month if the sales volume is 7,300 units?