Exercise 5-13 Changes in Selling Price, Sales Volume, Variable Cost per Unit, and Total Fixed Costs [LO5-1, LO5-4] Miller Companys contribution format income statement for the most recent month is shown below: Total Per Unit Sales (31,000 units) $ 248,000 $ 8.00 Variable expenses 155,000 5.00 Contribution margin 93,000 $ 3.00 Fixed expenses 42,000 Net operating income $ 51,000 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 10%? 2. What is the revised net operating income if the selling price decreases by $1.20 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 $1.20 per unit, fixed expenses increase by $9,000, and the number of units sold decreases by 7%? 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 10%?