Algebra and Trigonometry 4th Edition by James Stewart, Lothar Redlin, Saleem Watson - ISBN-13978-1305071742
 
This bestselling author team explains concepts simply and clearly, without glossing over difficult points. Problem solving and mathematical modeling are introduced early and reinforced throughout, providing students with a solid foundation in the principles of mathematical thinking. Comprehensive and evenly paced, the book provides complete coverage of the function concept, and integrates a significant amount of graphing calculator material to help students develop insight into mathematical ideas. The authors' attention to detail and clarity�the same as found in James Stewart's market-leading Calculus book�is what makes this book the market leader.