Thank you to Quincy McDonald at F. A. Davis for choosing me for this project. It has once again been a pleasure working with you and your whole team. It was easy to complete this project with a group of people who treated me with such kindness, professionalism, and patience every step of the way. Thank you to Sharon Eagle for allowing me to continue to participate in your vision for student success. Thank you to Dean DeChambeau for your patience and for thoroughly checking, and double checking, every chapter. Your perspective and advice helped to ensure the readers get clear, correct information. Thank you to the entire team that worked on this project. Each one of you brought something important to this edition. Finally, thank you to all of the reviewers. Your input and suggestions facilitated some great improvements to this edition!