Question

The length of a rectangle is four times the width. If the width is represented by x​, then build a variable expression that describes the length?

Answer 1

The variable expression that describes the length `l` will be:
`l = 4x`

Explanation:

Given: The length of a rectangle is four times the width.

The width is represented by `x​`.

Let the length be represented by `l`.

Then the variable expression that describes the length `l` will be:

`l = 4xxx`

Or

`l = 4x`