Miller Company's contribution format income statement for the most recent month is shown below. Sales (42,000 units) Variable expenses 5.00 Total $336,000 Per Unit $8.00 210,000 Contribution margin 126,000 $3.00 Fixed expenses 46,000 Net operating income $ 80,000 Required: (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 $1.50 per unit and the number of units sold increases by 22%? 3. What is the revised net operating income if the selling price increases by $1.50 per unit, fixed expenses increase by $10,000, 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 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