Pre-Calculus in 2016

Secondary School Algebra by Vijay, Sujith

Core Mathematics by Frempong, George N.

Linear Algebra as an Introduction to Abstract Mathematics by Lankham, Isaiah, Nachtergaele, Bruno, Schilling, Anne

core mathematics volume 2 by Frempong, George N.

Calculus for Dummies by Ryan, Mark

Pre-Calculus - A Classical Approach by Ohara M. Ed, Martin I.

Precalculus by Abramson, Jay