need help with 3 and 4 please

2 Miller Company's contribution format income statement for the most recent month is shown below: Total $ 216,000 108.000 108,000 40.000 $ 68,000 Per Unit $ 6.00 3.00 $ 3.00 Sales (36,000 units) Variable expenses Contribution margin Fixed expenses Net operating income 2 points Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 13%? 2. What is the revised net operating income if the selling price decreases by $1.50 per unit and the number of units sold increases by 16%? 3. What is the revised net operating income if the selling price increases by $1.50 per unit, fixed expenses increase by $6,000, and the number of units sold decreases by 5%? 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 11%? Answer is complete but not entirely correct. 1. $ 82,040 2 $ 22,640 Net operating income Net operating income Net operating income Net operating income 3 $ 109,520 4 $ 45,536