The length of a rectangle is 7 inches longer than its width. If the area of the

rectangle is 144 square inches, what are the dimensions?

Let's represent the length of the rectangle as x and the width as y.

So always try to make a relationship between the unknowns so you don't have a lot of variables

Now

The length of the triangle could be represented by width+7=length in other words y+7=x

So you could substitute x in the equation of x*y=144

(Y+7) (y) = 144

So y^2+7=144

Y=11.7 x=18.7

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