Miller Company's contribution format income statement for the most recent month is shown below. Total Per Unit Sales (39,000 units) $ 351,000 $9.00 Variable expenses 234, Bee 6.00 Contribution margin 117,000 $3.00 Fixed expenses 42.000 Net operating income $ 75,000 Required: (Consider each case independentlys: 1. What is the revised net operating income if unit sales increase by 18%? 2. What is the revised net operating income if the selling price decreases by $150 per unit and the number of units sold increases by 21%? 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 6%? 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 10%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income