The authors would like nothing more than to dive right into the sheer excitement of Precalculus.
However, experience - our own as well as that of our colleagues - has taught us that is it beneficial,
if not completely necessary, to review what students should know before embarking on a
Precalculus adventure. The goal of Chapter 0 is exactly that: to review the concepts, skills and
vocabulary we believe are prerequisite to a rigorous, college-level Precalculus course. This review
is not designed to teach the material to students who have never seen it before thus the presentation
is more succinct and the exercise sets are shorter than those usually found in an Intermediate
Algebra text.