Thanks, Val. The AoPS one looks good, will give that one a try.
AoPS books are good for budding mathematicians, but I think they may be more theoretical than necessary for someone who just wants to be prepared for a college calculus course geared to engineers and pre-meds (rather than math majors). I recommend something like "Schaum's Outline of Precalculus", available for $4 used on Amazon including shipping. The SAT math subject test level 2 covers math through pre-calculus. Someone who scores 700+ on it is ready for a college calculus course, and study guides and practice tests are available.
