Exercise 6-13 Changes in Selling Price, Sales volume, variable Cost per Unit, and Total Fixed Costs [LO6-1, LO6-4] Miller Company's contribution format income statement for the most recent month is shown below: Sales (45,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $360,000 225,000 135,000 48,000 $ 87,000 Per Unit $ 8.00 5.00 $3.00 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 12%? 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 21%? 3. What is the revised net operating income if the selling price increases by $1.30 per unit, fixed expenses increase by $8,000, and the number of units sold decreases by 2%? 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 9%? 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income