Question 1034536
You found LW=A, and A was given A=150.


The description describes  L=3+2W.


There you found {{{LW=150}}}
{{{highlight((3+2W)W=150)}}}


Next, you continue using algebraic arithmetic skills to solve that W in the equation.  This is a quadratic equation and not very complicated.  Solve for W.  Maybe the quadratic part is factorable?


{{{3W+W^2=150}}}
{{{W^2+3W-150=0}}}-----------Does this form look better now?   Factorize if possible, or if not then use general formula for solution of a quadratic equation.


When W is found, use it to evaluate L=2W+3.