document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=260813>Question 260813</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You need to choose between two telephone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B has a monthly fee of $13 with a charge of $0.06 per local call. How many local telephone calls in a month make Plan A the better deal?\r<BR>\n" );
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document.write( "I know that I am supposed to use the greater than and less than signs. Please help!!\r<BR>\n" );
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document.write( "Thank You!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #192115 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=192115\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plan A charges $25 per month for unlimited calls.<BR>\n" );
document.write( "Plan B charges $13 per month plus $.06 per call.\r<BR>\n" );
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document.write( "You want to know when plan A costs less than plan B.\r<BR>\n" );
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document.write( "set up an equation as follows:\r<BR>\n" );
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document.write( "Cost for Plan A = $25.00\r<BR>\n" );
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document.write( "Cost for Plan B = $13.00 + .06 * x\r<BR>\n" );
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document.write( "x = number of calls per month.\r<BR>\n" );
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document.write( "you want to know when plan A Costs are smaller than plan B costs.\r<BR>\n" );
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document.write( "your equation is:\r<BR>\n" );
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document.write( "Plan A Costs < Plan B costs.\r<BR>\n" );
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document.write( "this becomes:\r<BR>\n" );
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document.write( "25 < 13 + .06 * x\r<BR>\n" );
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document.write( "subtract 13 from both sides of this equation to get:\r<BR>\n" );
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document.write( "25 - 13 < .06 * x\r<BR>\n" );
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document.write( "simplify to get:\r<BR>\n" );
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document.write( "12 < .06 * x\r<BR>\n" );
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document.write( "divide both sides of this equation by .06 to get:\r<BR>\n" );
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document.write( "12/.06 < x\r<BR>\n" );
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document.write( "simplify to get:\r<BR>\n" );
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document.write( "200 < x\r<BR>\n" );
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document.write( "this is the same as:\r<BR>\n" );
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document.write( "x > 200\r<BR>\n" );
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document.write( "Plan A at $25.00 per month will be cheaper when the number of minutes used per month is > 200.\r<BR>\n" );
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document.write( "200 should be the break even point.\r<BR>\n" );
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document.write( "200 * .06 + 13 = 12 + 13 = 25.\r<BR>\n" );
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document.write( "when the minutes go above 200, plan A at $25 per month will be cheaper.\r<BR>\n" );
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document.write( "at 201 minutes, plan B costs .06 * 201 = $12.06 + $13.00 = $25.06 which is more expensive than plan A.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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