Today
we learned that to divide by a nonzero number, we simply multiply by
its reciprocal. Remember that zero has no reciprocal, so we can not
divide by zero. 
Please review for your exam this weekend. We will have an in-class review on Monday.
Problem of The Day:
On
a particular cube, one face is white, two faces are green, and the rest
of the faces are red. If the total area of the red faces is 21 square
inches, what is the area of the white face?