document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1150943>Question 1150943</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A store is having a sale on books. If you buy the first book for $12, each additional book will cost $6. Which formula models this situation?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #772518 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=772518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A store is having a sale on books.<BR>\n" );
document.write( " If you buy the first book for $12, each additional book will cost $6.<BR>\n" );
document.write( " Which formula models this situation?<BR>\n" );
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document.write( "f(b) = 6(b-1) + 12<BR>\n" );
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document.write( "b = total number of books<BR>\n" );
document.write( "f(b) = total cost of the books<BR>\n" );
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