Miller Company's contribution format income statement for the most recent month is shown below: Contribution margin Sales (42,000 units) Variable expenses Fixed expenses Net operating income Required: Total $ 420,000 294,000 126,000 Per Unit $ 10.00 7.00 $ 3.00 47,000 $ 79,000 (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 $1.30 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 $1.30 per unit, fixed expenses increase by $9,000, and the number of units sold decreases by 3%? 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%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income