Miller Company's contribution format income statement for the most recent month is shown below: Sales (32,000 unita) Variable expenses Contribution margin Fixed expenses Het operating income Total $ 160,000 69,000 96,000 15,000 $ 51,000 Per Unit $5.00 2.00 $3.00 Required: (Consider each case independently 1 What is the revised net operating income if unit sales increase by 11%? 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 $120 per unit fixed expenses increase by $8,000, 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 20% variable expenses increase by 10 cents per unit, and the number of units sold decreases by 7%