document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=457198>Question 457198</A>: <I><SPAN STYLE=\"word-break: break-all;\"> When writing an inequality for a word problem, do the units have to be converted to have the same value (dollars and cents) before writing the expression? This was one of our homework questions\r<BR>\n" );
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document.write( "A cell phone company has offered you two different rates. The first rate is $35 per month and 5 cents per phone call (time does not matter). The second offer is $55 per month and 2 cents per call. Set up the inequality to model this problem and find where it is less expensive to go with the second plan.\r<BR>\n" );
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document.write( "This is the inequality I came up with: 35 + 5x < 55 + 2x, but I'm not sure if that's correct. Since the price per call is in cents and not whole dollars, would I need to somehow convert that value before trying to write up the inequality? And if so, would it be something like:  35 + .05x < 55 + .02x ? Any help on this would be greatly appreciated. Thank you.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #313705 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=313705\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 35 + .05x < 55 + .02x<BR>\n" );
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document.write( "Yes, you need the decimals so everything<BR>\n" );
document.write( "is stated in terms of dollars.<BR>\n" );
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document.write( "But you need to reverse the inequality<BR>\n" );
document.write( "because you want the 2nd plan to be <BR>\n" );
document.write( "less expensive:<BR>\n" );
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document.write( "Solve: 35 + .05x > 55 + .02x<BR>\n" );
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document.write( "0.03x > 20<BR>\n" );
document.write( "x > 20/0.03<BR>\n" );
document.write( "x > 666.67<BR>\n" );
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document.write( "2nd plan is less expensive if 667 phone calls are made.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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