document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=357055>Question 357055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help to assist my 7th grader.\r<BR>\n" );
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document.write( "How to set up ratio....\r<BR>\n" );
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document.write( "Phone Plan 1 is $.18 per minute<BR>\n" );
document.write( "Phone Plan 2 is $50 base plan and $.10 per minute.\r<BR>\n" );
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document.write( "At what point is it cheaper to use plan 1?\r<BR>\n" );
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document.write( "How do I show her how to do this? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #254984 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=254984\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let m = minutes used<BR>\n" );
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document.write( "Phone Plan 1 is $.18 per minute<BR>\n" );
document.write( "cost of plan 1 = .18m<BR>\n" );
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document.write( "Phone Plan 2 is $50 base plan and $.10 per minute. <BR>\n" );
document.write( "cost of plan 2 = .10m + 50<BR>\n" );
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document.write( "At what point is it cheaper to use plan 1? <BR>\n" );
document.write( "\"cost of plan 1\" < \"cost of plan 2\"<BR>\n" );
document.write( ".18m < .10m + 50<BR>\n" );
document.write( "subtracting .10m from both sides:<BR>\n" );
document.write( ".08m < 50<BR>\n" );
document.write( "dividing both sides by .08<BR>\n" );
document.write( "m < 50/.08<BR>\n" );
document.write( "m < 625 minutes<BR>\n" );
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document.write( "Therefore:<BR>\n" );
document.write( "At what point is it cheaper to use plan 1? <BR>\n" );
document.write( "when minutes used is less than 625 minutes </SPAN>\n" );
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