We would like to express our gratitude to the reviewers of this fourth edition (marked with an asterisk) and previous editions, who provided such invaluable insights and comments. Their contributions helped shape the development of the text and carry out the vision stated in the Preface.

• Alison Ahlgren, University of Illinois at Urbana-Champaign

• Mohammad Aslam, Georgia Perimeter College

• Mario Barrientos, Angelo State University

• Ratan Barua, Miami-Dade College

• Sam Bazzi, Henry Ford Community College

• *Elizabeth Bowman, The University of Alabama at Huntsville

• Diane Burleson, Central Piedmont Community College

• Maureen T. Carroll, University of Scranton

• Melissa Cass, State University of New York–New Paltz

• Jason Cates, Lone Star College–Montgomery

• Charles Conrad, Volunteer State Community College

• Irene Coriette, Cameron University

• Douglas Culler, Midlands Technical College

• Baiqiao Deng, Columbus State University

• Hussain Elaloui-Talibi, Tuskegee University

• Kathleen M. Fick, Methodist University–Fayetteville

• Junko Forbes, El Camino College

• Gene Garza, Samford University

• Steven Gonzales, San Antonio College

• Bobbie Jo Hill, Coastal Bend College

• Fran Hopf, University of South Florida

• Natalie Hutchinson, Old Dominion University

• *Nyeita Irish, Coastal Carolina University

• Yvette Janecek, Coastal Bend College

• Rose M. Jenkins, Midlands Technical College

• Mohammad Kazemi, University of North Carolina at Charlotte

• David Keller, Kirkwood Community College

• Diana Klimek, New Jersey Institute of Technology

• Mile Krajcevski, University of South Florida

• Lance Lana, University of Colorado–Denver

• Alexander Lavrentiev, University of Wisconsin–Fox Valley

• Rebecca Leefers, Michigan State University

• Paul Morgan, College of Southern Idaho

• Kathy Nickell, College of DuPage

• Catherine Pellish, Front Range Community College

• Betty Peterson, Mercer County Community College

• Edward K. Pigg, Southern Union Community College

• Marshall Ransom, Georgia Southern University

• Janice F. Rech, University of Nebraska–Omaha

• Traci Reed, St. Johns River Community College

• Linda Reist, Macomb Community College

• Jeri Rogers, Seminole Community College–Oviedo Campus

• Jason Rose, College of Southern Idaho

• Mehdi Sadatmousavi, Pima Community College–West

• Christy Schmidt, Northwest Vista

• Nyeita Schult, Coastal Carolina University

• Delphy Shaulis, University of Colorado–Boulder

• Cindy Shaw, Moraine Valley Community College

• Cynthia Sikes, Georgia Southern University

• James Smith, Columbia State Community College

• Linda Snellings-Neal, Wright State University

• Jacqueline Stone, University of Maryland–College Park

• Kay Stroope, Phillips County Community College

• Robert J. Strozak, Old Dominion University

• Helen Timberlake, Rochester Institute of Technology

• Frances Tishkevich, Massachusetts Maritime Academy

• Jo Tucker, Tarrant County College–Southeast

• *Violeta Vasilevska, Utah Valley University

• Roger Werbylo, Pima Community College–West

• *Denise Williams, Coastal Carolina University

• Tom Worthing, Hutchinson Community College

• Vivian Zabrocki, Montana State University–Billings

• Marti Zimmerman, University of Louisville

Our sincerest thanks go to the legion of dedicated individuals who worked tirelessly to make this book possible. We would like to express our gratitude to our typist, Beverly DeVine-Hoffmeyer, for her amazing patience and skill. We must also thank Dr. Praveen Rohatgi, Dr. Nalini Rohatgi, and Dr. Bhupinder Bedi for the consulting they provided on all material relating to medicine. We particularly want to thank Professors Mile Krajcevski, Viktor Maymeskul, and Scott Rimbey for many helpful discussions and suggestions, particularly for improving the exercise sets. Further gratitude is due to Irena Andreevska, Gokarna Aryal, Ferene Tookos, and Christine Fitch for their assistance on the answers to the exercises in the text. In addition, we would like to thank De Cook, Doug Ewert, John Samons, and Beverly Fusfield, for their meticulous accuracy in checking the text. Thanks are due as well to Chere Bemelmans and Cenveo for their excellent production work. Finally, our thanks are extended to the professional and remarkable staff at Pearson Education. In particular, we would like to thank Anne Kelly, Editor in Chief; Ashley Gordon, Portfolio Management Assistant; Rachel Reeve, Content Producer; Scott Disanno, Managing Producer; Peggy Lucas, Marketing Manager; Stacey Sveum, Product Marketing Manager; Shannon McCormack, Marketing Assistant; Jonathan Wooding, Producer; Kristina Evans, Manager: Content Development, Math; Eric Gregg, Senior Content Developer, Math; and Joe Vetere, Senior Author Support Technology Specialist.

We invite all who use this book to send suggestions for improvements to Marcus McWaters at [email protected].