As part of the market-leadingGraphing ApproachSeries by Larson, Hostetler, and Edwards,Precalculus Functions and Graphs: A Graphing Approach,4/e, provides both students and instructors with a sound mathematics course in an approachable, understandable format. The quality and quantity of the exercises, combined with interesting applications, cutting-edge design, and innovative resources, make teaching easier and help students succeed in mathematics. This edition, intended for precalculus courses that require the use of a graphing calculator, includes a moderate review of algebra to help students entering the course with weak algebra skills. Enhanced accessibility to students is achieved through careful writing and design, including same-page examples and solutions, which maximize the readability of the text. Similarly, side-by-side solutions show algebraic, visual, and numeric representations of the mathematics to support students' various learning styles. TheLibrary of Functionsthread throughout the text provides a definition and list of characteristics for each elementary function and compares newly introduced functions to those already presented to increase students' understanding of these important concepts. ALibrary of Functions Summaryalso appears inside the front cover for quick reference. Technology Supportnotes provided at point-of-use throughout the text guide students to theTechnology Support Appendix,where they can learn how to use specific graphing calculator features to enhance their understanding of the concepts presented. These notes also direct students to theGraphing Technology Guideon the textbook web site for keystroke support. Houghton Mifflin'sEduspaceonline classroom management tool offers instructors the option to assign homework and tests online, provides tutorial support for students needing additional help, and includes the ability to grade any of these assignments automatically.