document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1082235>Question 1082235</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Trey has saved some money and is going to buy some music. The number N of CDs Trey can buy is inversely proportional to the cost C of a CD. If the cost of one CD is $8, then he can buy 9. If the cost of one CD is $12, then how many CDs can he buy? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #696565 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=696565\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Trey has saved some money and is going to buy some music.<BR>\n" );
document.write( " The number N of CDs Trey can buy is inversely proportional to the cost C of a CD.<BR>\n" );
document.write( " If the cost of one CD is $8, then he can buy 9.<BR>\n" );
document.write( " If the cost of one CD is $12, then how many CDs can he buy?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let n = no. of CD's he can buy<BR>\n" );
document.write( "An inverse proportion equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n%2F9 ALIGN=MIDDLE  ALT=\"n%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F12 ALIGN=MIDDLE  ALT=\"8%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "12n = 8 * 9<BR>\n" );
document.write( "12n = 72<BR>\n" );
document.write( "n = 72/12<BR>\n" );
document.write( "n = 6 cd's   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );