Question: the height of a sheet of paper is 2.5 inches more than its width. 1. express the height of the paper in terms of its width, w. 2. express the width of the paper in terms of its height, h.

Part (I): h = w + 2.5
Part (II): w = h - 2.5

Explanation:
Assume that the height of the sheet is h and that its width is w

We are given that:
The height is 2.5 in more than the width.
This means that if we add 2.5 in to the width, we will get the length of the height.
Therefore:
h = w + 2.5

Now, for part II, we will solve the previous equation for w as follows:
h = w + 2.5
h - 2.5 = w + 2.5 - 2.5
Therefore:
w = h - 2.5

Hope this helps :)