Applying the formula for area of a rectangle, the length of the rectangle can be expressed as: 3x + 2.
Recall:
Area of a rectangle (A) = L x W
Given:
Area of rectangle (A) expressed as: 9x + 6
Width (W) = 3
Length (L) = ?
9x + 6 = L x 3
[tex]9x + 6 = 3L[/tex]
[tex]\frac{9x}{3} + \frac{6}{3} = \frac{3L}{3}\\\\3x + 2 = L\\\\L = 3x + 2[/tex]
Therefore, applying the formula for area of a rectangle, the length of the rectangle can be expressed as: 3x + 2.
Learn more here:
https://brainly.com/question/16410706