b. The area of another sheet of paper is 200 square inches. Write an equation that
gives the area, B, of this sheet of paper, in square inches, after being folded into
thirds n times.
It is a strangely worded question but you are dividing the paper in 3's n times so 3n will be part of the answer and you are dividing 200. So, the answer is 200/3n.
