Miller Company's contribution format income statement for the most recent month is shown below: Sales (43,000 units) Variable expenses Total $ 215,000 $5.00 2.00 Per Unit 86,000 Contribution margin 129,000 $ 3.00 Fixed expenses 43,000 Net operating income $ 86,000 Required: (Consider each case independently): 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 $1.20 per unit and the number of units sold increases by 16%? 3. What is the revised net operating income if the selling price increases by $1.20 per unit, fixed expenses increase by $6,000, and the number of units sold decreases by 5%? 4. What is the revised net operating income if the selling price per unit increases by 10%, variable expenses increase by 30 cents per unit, and the number of units sold decreases by 5%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income