13.60 because you add the coupon discount back on and subtract tax cost and divide by 2
9/20
You need to have the same denominator so multiply it by 5 on the bottom and top to get 5/20 then you can compare it 5/20 < 9/20
The correct factorization is
2(x-2)²
15.48 + 5.16 = p because you have to do the reverse. to find "p" you have to add the amount you subtracted.