Miller Company's contribution format income statement for the most recent month is shown below: Sales (40,000 units) Variable expenses Total $ 280,000 160,000 Contribution margin 120,000 49,000 Per Unit $ 7.00 4.00 $ 3.00 Net operating income. $ 71,000 Required: Fixed expenses (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 16%? 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 19%? 3. What is the revised net operating income if the selling price increases by $1.40 per unit, fixed expenses increase by $6,000, 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 20%, variable expenses increase by 40 cents per unit, and the number of units sold decreases by 13%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income