document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=574818>Question 574818</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a big test and cannot firqure this out please help<BR>\n" );
document.write( "A cellular phone company offers a contract for which the cost C, in dollars, of T minutes of telephoning is given by C=0.25(t-600)+50.95, where it is assumed that t is greater then or equal to 600 minutes. What time keeps the cost between $97.95 and $123.45?\r<BR>\n" );
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document.write( "for the cost to be between 97.95 and 123.45 the time must be between  and  minutes </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #369301 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=369301\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> C=0.25(t-600)+50.95, where it is assumed that t is greater then or equal to 600 minutes. What time keeps the cost between $97.95 and $123.45? <BR>\n" );
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document.write( "97.95 <= 0.25(t-600)+50.95 <= 123.45<BR>\n" );
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document.write( "Subtract 50.95 along the line:<BR>\n" );
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document.write( "45 <= 0.25(t-600) <=72.50<BR>\n" );
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document.write( "Divide through by 0.25 to get:<BR>\n" );
document.write( "180 <= t-600 <= 290<BR>\n" );
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document.write( "Add 600 along the line:<BR>\n" );
document.write( "780 <= t <=890<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "==================  </SPAN>\n" );
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