Chapter 9 of Elementary and Intermediate Algebra addresses various types of inequalities, such as compound inequalities, absolute-value inequalities, and inequalities in two variables.
The emphasis remains on problem solving using algebraic concepts. The chapter concludes with an explanation of problem solving using linear programming. The Sanibel Island Bridge toll in Florida is used to illustrate inequalities at work in the real world.
To find out more about Sanibel Island, visit the Sanibel Captiva Island homepage at
http://www.coconet.com/sanibel-captiva/home.html
InterAct Math Tutorial
InterAct Math tutorial exercises provide you with on-line practice problems and guided solutions. The InterAct Math exercises on www.conceptsapplications.com were written specifically to accompany the second edition of Elementary and Intermediate Algebra. To access the InterAct Math tutorials over the Web, you must first download and install the FREE InterAct Math plugin for Windows 95 or higher. Click here to link to instructions for downloading the plug-in and to access the Web exercises for Chapter 9.
Extra Practice Worksheets
For further practice on topics in Chapter 9, use the Adobe Acrobat Reader to view and print the extra exercise worksheets below.
About the Acrobat Reader 
If you already have the Acrobat Reader installed on your computer, simply click on the section links below to view the exercises for those sections. If you do not already
have the Acrobat Reader installed on your computer, click on the "Get Acrobat Reader" button above to go to Adobe's Web site. Follow the directions on the Adobe Web site for downloading and installing the Adobe Acrobat Reader, then return to this Web site and just click on the section links below to view the exercise sets.
Note: The Acrobat Reader is a FREE plug-in offered by Adobe for Web users. You will only need to install this once on your computer to access any PDF files on the Web.
Sections 9.1, EXERCISE SET, Answers (Acrobat PDF Files)
Section 9.3, EXERCISE SET, Answers (Acrobat PDF Files)
Section 9.4, EXERCISE SET, Answers (Acrobat PDF Files)