document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=98396>Question 98396</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the monthly cost of a long-distance phone plan (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of 0.09. \r<BR>\n" );
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document.write( "The monthly cost for 44 minutes of calls is  $17.80. What is the monthly cost for 37 minutes of calls? <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 #71543 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=71543\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that the monthly cost of a long-distance phone plan (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of 0.09. <BR>\n" );
document.write( "The monthly cost for 44 minutes of calls is $17.80. What is the monthly cost for 37 minutes of calls? <BR>\n" );
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document.write( "cost = (slope)minutes + (constant)<BR>\n" );
document.write( "17.80 = 0.09(44)+ constant<BR>\n" );
document.write( "constant = $13.84<BR>\n" );
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document.write( "cost = 0.09(minutes)+13.84<BR>\n" );
document.write( "What is the monthly cost for 37 minutes of calls? <BR>\n" );
document.write( "cost = 0.09(37) + 13.84<BR>\n" );
document.write( "cost = 3.33 + 13.84<BR>\n" );
document.write( "cost = $17.17<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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