Need help it keeps marking my number 3&4 wrong. Don't know what's wrong.

Costs [LO5-1, L05-4) Miller Company's contribution format income statement for the most recent month is shown below. Sales (42,000 unita) Variable expenses Contribution margin Tixed expenses Not operating income Total $ 336,000 210,000 126,000 50,000 $76,000 Per Unit $8.00 5.00 $ 3.00 Required: (Consider each case independently): 1. What is the revised net operating income if unt sales increase by 13% 2. What is the revised net operating income if the selling price decreases by $140 per unit and the number of units sold Increases by 3. What is the revised net operating income of the selling price increases by $1.40 per unit, fixed expenses increase by $10,000, and the number of units sold decreases by 4%? 4. What is the revised nat operating Income if the selling price per unit increases by 10%, variablo expenses increase by 40 cents per unit, and the number of units sold decreases by 10%? 17%? Answer is complete but not entirely correct. 1. Net operating income $ 92380 2. Net operating income S 28.624 3. Net operating income 5 117,608 4 Net Operating income s 18.080