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

Total Per Unit Sales (36,000 units) $ 180,000

Per unit $ 5.00

Variable expenses 72,000

Per Unit 2.00

Contribution margin 108,000

Per Unit $ 3.00

Fixed expenses 48,000

Net operating income $ 60,000

(Consider each case independently): 1. What is the revised net operating income if unit sales increase by 11%? 2. What is the revised net operating income if the selling price decreases by $1.50 per unit and the number of units sold increases by 17%? 3. What is the revised net operating income if the selling price increases by $1.50 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 20%, variable expenses increase by 30 cents per unit, and the number of units sold decreases by 7%?