document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=357006>Question 357006</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A mobile phone company offers two monthly calling plans, A and B. Under A, every<BR>\n" );
document.write( "minute costs $ 0.10. Under B, the first 100 minutes costs $ 12 and every extra minute costs $ 0.08. What monthly talking time would make B the better choice? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #254939 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=254939\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be the number of calls made in a month.<BR>\n" );
document.write( "PLAN A billing = 0.10x<BR>\n" );
document.write( "PLAN B billing =12 +0.08x\r<BR>\n" );
document.write( "\n" );
document.write( "12+0.08x<0.10x<BR>\n" );
document.write( "12<0.10x-0.08x<BR>\n" );
document.write( "(12<0.02x)<BR>\n" );
document.write( "((12/0.02)<x)<BR>\n" );
document.write( "...<BR>\n" );
document.write( "((600<x))<BR>\n" );
document.write( "...<BR>\n" );
document.write( "(for (x> 600) plan B is better)<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );