document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=32527>Question 32527</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two years after an expansion, a company had sales of $42,000. Four years later the sales were $102,000. Assuming that the sales in dollars S and the time in years t are related by a linear equation, find the equation relating S and t.<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 #19033 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=19033\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You have two points and want to find the equation of the <BR>\n" );
document.write( "line through those points.<BR>\n" );
document.write( "The points are (2,42000) and (6,102000)<BR>\n" );
document.write( "The slope if 60000/4= 15000<BR>\n" );
document.write( "Substitute into y=mx+b to find \"b\"<BR>\n" );
document.write( "42000=(15000)(2)+b<BR>\n" );
document.write( "12000=b<BR>\n" );
document.write( "The equation you want is S=(15000)t+12000\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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