22-6=16. 16÷4=4. Each ticket costs $4.
If he sold 1/5 of them then he would have 4 houses left because he sold 1 :)
Answer:

multiply x through out:

factorise out x²:

take square root on both sides:

<span>35 + 5n ≥ 90, so n ≥ 11 . Your Welcome (:</span>