Question

The length, l call my a rectangular room is four less than the width, W, of the room. Which expression represents the area of the room.
(I have no options)

Answer 1

Answer:  Either $w(w-4)$ or $w^2 - 4w$

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Explanation:

w = width

w-4 = length since it is 4 less than the width

Multiply the length and width to get the area of the rectangle.

area = length*width

area = $(w-4)w$

area = $w(w-4)$

area = $w^2-4w$

In the last step, I used the distributive property.

Either expression mentioned above is valid for the area. If you had to pick only one, I'd go for $w^2-4w$