Kazan recycles 9 plastic bags every week. Which expression shows the total number of plastic bags he recycles in w weeks?

The expression will be 9w

Explanation:

Let's take the recycled bags a x (it's value is actually 9)

So in one week the bag will be xw

Two weeks 2x * 2w and so on.

Since the value of x is 9 you multiply 9 with w which is the number of weeks.

Therefore 9w