Question

http://i.imgur.com/uMt8LPE.png

Answer 1

Area of rectangle is length width
so you are looking for width
then the formula would be width = area / length

Answer 2

When you find the area you do: length*width
In this case you have the length and the area (7.5*w=41.25)
You have to solve for w (width) here.
So you do: 7.5w=41.25
Do the inverse to isolate w.

Answer 3

calculusxy is right :)
then to solve for w
divide both sides by 7.5
so w = 41.25 divided by 7.5 = ?

Answer 4

33.75