EXERCISE 3-13 Using a Contribution Format Income Statement [LO 3-1. LO 3-4] Miller Company's most recent contribution format income statement is shown below: Required: Prepare a new contribution format income statement under each of the following conditions (consider each case independently): 1. The number of units sold increases by 15%. 2. The selling price decreases by $1.50 per unit, and the number of units sold increases by 25%. 3. The selling price increases by $1.50 per unit, fixed expenses increase by $20,000, and the number of units sold decreases by 5% 4. The selling price increases by 12%, variable expenses increase by 60 cents per unit, and the number of units sold decreases by 10%