Expanded Skills and Practice: The 5th edition includes a number new of skill-building and practice exercises, as well as additional problems.

Updated Data and Models: References to dates, prices, and other time-bound quantities have been updated for contemporary applied examples, problems, and projects. For example, Section 11.7 now introduces the current debate on Peak Oil production, underscoring the importance of mathematics in understanding the world's economic and social problems.

New Projects: There are new projects in Chapter 1:Which way is the Wind Blowing?; Chapter 5: The Car and the Truck; Chapter 9: Prednisone; and Chapter 10: The Shape of Planets.

More Problems: 10% more "problem"-type questions now included in the test banks and instructor's manuals.

Chapter 4 Reorganization: This chapter has been reorganized to smooth the approach to optimization.

New ConcepTests: Promote active learning in the classroom. These can be used with or without clickers, and have been shown to dramatically improve student learning. Available in a book or on theweb at www.wiley.com/college/hugheshallett.

Expanded Appendices: A new Appendix D introducing vectors in the plane has been added. This can be covered at any time, but may be particularly useful in the conjunction with Section 4.8 on parametric equations.