Miller Company's contribution format income statement for the most recent month is shown below. Sales (36,000 units) Variable expenses Contribution margin Total $ 252,000 144,000 108,000 Per Unit $ 7.00 4.00 $ 3.00 Fixed expenses 43,000 Net operating income $ 65,000 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 14% ? 2. What is the revised net operating income if the selling price decreases by $1.40 per unit and the number of units sold increases by 20%? 3. What is the revised net operating income if the selling price increases by $1.40 per unit, fixed expenses increase by $7,000, 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 40 cents per unit, and the number of units sold decreases by 6%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income