Thread: algebra help

From a squqre piece of cardboard with width x inches, a square of width x-3 incues is removed from the center. Write the area of the remaining piece as a function of a. My answer is f(x)= 6x+9. But I'm not sure of my answer. thanks for the help.

Originally Posted by kwtolley

From a squqre piece of cardboard with width x inches, a square of width x-3 incues is removed from the center. Write the area of the remaining piece as a function of a. My answer is f(x)= 6x+9. But I'm not sure of my answer. thanks for the help.

Initial area is , area of removed piece is , so remaining area is:



RonL

thanks again, I see how I messed this one. you are a big help.