Question 1010273

Please help! I've had trouble with this for a long time and always seem to be stuck on it. 
The length of a rectangle is three times the width of the rectangle. If the width of the rectangle is y units, what is the area of the rectangle?
3y units2
 
3y2 units2

y + 3 units2

3y(y + 3) units2
<pre>Width:  y
Length: 3 * y, or 3y
Area:   Width * Length, or y * 3y, or {{{highlight_green(3y^2)}}}