Miller Companys contribution format income statement for the most recent month is shown below:

	Total			Per Unit
Sales (33,000 units)	$	264,000		$	8.00
Variable expenses		165,000			5.00
Contribution margin		99,000		$	3.00
Fixed expenses		44,000
Net operating income	$	55,000

Required:

(Consider each case independently):

1. What is the revised net operating income if unit sales increase by 15%?

2. What is the revised net operating income if the selling price decreases by $1.10 per unit and the number of units sold increases by 20%?

3. What is the revised net operating income if the selling price increases by $1.10 per unit, fixed expenses increase by $8,000, and the number of units sold decreases by 4%?

4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 7%?