Benito is selling T-shirts for $8 each for his school fund-raiser. So far, he has sold 16 T-shirts. How much more does he need to sell to reach his goal of $200 in sales?

Three of these equations solve for the number of T-shirts, t, he still needs to sell to reach $200 in sales. Which equation does NOT?

answer 1 :t=9
answer 2:t=8(t + 16) = 200
answer 3 t=8t + 128 = 200
answer 4:t =8t + 16 = 200