Hostetler. Robert P. <br/><br/>
Pregalculus function and graphs  A graphing Approach 

 - 4th ed.; 
 - Boston New York  Houghton Mifflin Company  c2005 
 - xviii.704p.;  ill.;  26cm 
<br/><br/><label>ISBN: </label>061839477 
<br/><br/><label>Dewey Class. No.: </label>512.1/  / LAR