Exercise 6-13 (Algo) 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: Required: (Consider each case independentiy): 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 $1.20 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 $1.20 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 10%, variable expenses increase by 10 cents per unit, and the number of units sold decreases by 11%