The downloadable and on-line exercises and review material found on this web site support your practice of the new skills you learned in Chapter 14.

Extra Practice exercises are downloadable worksheets of additional practice exercises. Print out these worksheets, work through the problems, and then check your work against the corresponding answer page.

InterAct math tutorials provide you with on-line practice problems and guided solutions.

Once you've practiced and mastered the basics of systems of equations, refer back to page 835, the first page of Chapter 14 of your Developmental Mathematics textbook and review the graded gasoline application.

Here's your chance to explore the World Wide Web and practice your skills at the same time. Explore some related Web sites to learn more about octane levels in gasoline.

After you've practiced and explored, don't forget to prepare for your upcoming Chapter Test. Work through the Chapter 14 Review and then check your answers. These free downloadable files are accessible by selecting the Chapter Review button at the top of this page.

Good luck!