Miller Company's contribution format income statement for the most recent month is shown below: Sales (31,000 units) Variable expenses Total $186,000 93,000 Contribution margin i 93,000 Per Unit $ 6.00 3.00 $ 3.00 Fixed expenses 46,000 Net operating income $ 47,000 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 $1.50 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 $1.50 per unit, fixed expenses increase by $5,000, 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 7% ? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income