If a 20 in. by 30 in. picture has a wooden frame "x" in. wide surrounding it, which equation can be used to find the total area of the picture and frame?

3 answers

What are your choices?
If a 20 in. by 30 in. picture has a wooden frame "x" in. wide surrounding it, which equation can be used to find the total area of the picture and frame?
4x^2+100x+600=A