document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428044>Question 428044</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here is another problem I am having difficulty figuring out:1)	A customer has to decide  between 2 phone plans A and B he wants to know which plan is better  \r<BR>\n" );
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document.write( "2)	The customer wants to know the best plan knowing that he uses the phone several times a day , he estimates that he uses the phone more than 2000 minutes a month <BR>\n" );
document.write( "3)	 <BR>\n" );
document.write( "Each plan has the following costs:<BR>\n" );
document.write( "Plan A: 700 minutes for $100, with each additional minute costing .45. <BR>\n" );
document.write( "Plan B:1400 minutes for $120, and each additional minute costing .40\r<BR>\n" );
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document.write( "I have figured out most of the problem by using the substitution method, but I can't seem to get the x an y intercepts for the table of values to correctly align with the problem. Can someone point me in the right direction? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297587 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=297587\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2) The customer wants to know the best plan knowing that he uses the phone several times a day , he estimates that he uses the phone more than 2000 minutes a month <BR>\n" );
document.write( "3) <BR>\n" );
document.write( "Each plan has the following costs:<BR>\n" );
document.write( "Plan A: 700 minutes for $100, with each additional minute costing .45.<BR>\n" );
document.write( "A(x) = 100 + 0.45(x-700)<BR>\n" );
document.write( "A(2000) = 100 + 0.45*1300 = $685 <BR>\n" );
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document.write( "Plan B:1400 minutes for $120, and each additional minute costing .40 <BR>\n" );
document.write( "B(x) = 120 + 0.40(x-1400) <BR>\n" );
document.write( "B(2000) = 120 + 0.40*600 = $360<BR>\n" );
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document.write( "Plan B is better at 2000 minutes<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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