document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979939>Question 979939</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"A person buys a phone for $86 and signs up for a single-line phone plan with 2000 monthly anytime minutes. The plan costs $116.98 per month. Write an equation that can be used to determine the total cost, C(t), of this phone plan for t months.\" My question is, how do I come up with the formula again?! I'm reviewing for my midterm tomorrow, and this is only chapter one! Help! \r<BR>\n" );
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document.write( "Thanks in advance,<BR>\n" );
document.write( "Anonymous </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601174 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=601174\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> t = number of months<BR>\n" );
document.write( "C(t) = total cost at t months\r<BR>\n" );
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document.write( "The phone costs $86. This is the fixed cost.\r<BR>\n" );
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document.write( "The plan costs $116.98 per month. This is the variable cost.\r<BR>\n" );
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document.write( "Total Cost = (variable cost)*(number of months) + (fixed cost)\r<BR>\n" );
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document.write( "C(t) = (116.98)*(t) + (86)\r<BR>\n" );
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document.write( "C(t) = 116.98t + 86\r<BR>\n" );
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document.write( "The total cost equation/function is <font color=\"red\">C(t) = 116.98t + 86</font> </SPAN>\n" );
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