[tex]\text{You're finding the applicable expression}\\\\\text{One way we could solve this is by plugging in the values in the left}\\\text{column to the expressions}\\\\\text{Lets plug in 2 to the first expression:}\\\\2^2+2+3\\\\\text{Solve:}\\\\4+2+3\\\\6+3=9\\\\\text{You would see that it gave you the right value, lets try it on another one:}\\\\3^2+3+3\\\\9+3+3\\\\12+3=15\\\\\text{This expression works}\\\\\boxed{x^2+x+3}[/tex]
