Question

The length of a rectangle is 4 less than three times the width. The area of the rectangle is given by the formula A = x w. Which of the following equations could be used to find the area?

Answer 1

From the question it is given that the length of the rectangle is 4 less than the three time of the width.

`l=3w-4`

Here, 'l' represnts the length and 'w' represents the width.

The area of the rectangle is,

`A=l* w`

Substitute expression 'l=3w-4' in the above equation.

`\begin{gathered} A=(3w-4)w \\ A=3w^2-4w \end{gathered}`

Thus, the correct option is option D.