The Algebra 1 A Student Reference Guide by K12 Inc is a hardcover textbook in English authored by Paul Thomas. It is designed for high school students studying algebra, focusing on the intermediate level. Published by K12, this book serves as a valuable resource for students looking to deepen their understanding of algebra concepts and equations. With a clear focus on the subject area of algebra, this textbook provides a comprehensive guide for students seeking to excel in their studies. Clean book (no writing or highlighting); odd problem answers in the back.