Miller Company's contribution format income statement for the most recent month is shown below: Sales (40,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 320,000 200,000 120,000 45,000 $ 75,000 Per Unit $ 8.00 5.00 $3.00 Required: (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 23%? 3. What is the revised net operating income if the selling price increases by $1.50 per unit, fixed expenses increase by $9,000, 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 20 cents per unit, and the number of units sold decreases by 13%? $ $ 88,200 28,800 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income