Copyright © 2009 by Paul A. Foerster

Algebra and Trigonometry:Functions and Applications

Volumes I, II, III (partial)

by

Paul A. FoersterAlamo Heights High School

San Antonio, Texas

First Printing, June, 2008

Copyright 2009

All rights reserved by the author, Paul A. Foerster. No part of this publication maybe reproduced, stored in a retrieval system, or transmitted in any form or by anymeans - electronic, mechanical, photocopy, recording or any other - except briefquotations in printed review, without the prior permission of the author.

Cover Photo by Chad McClarnon

Cover Design by Melissa Solomon

Photography by Jadyn & Julia Stevens (except Ch. 5)all rights reserved.

Printed in the USA

ISBN: 978-0-9814694-6-1

EVEREADY PRESS

1817 Broadway . Nashville, Tennessee 37203615-327-9106

Chapter 1

Functions and Mathematical Models