document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=246977>Question 246977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the average rate of change of x^2+5x from x1=3 and x2=6\r<BR>\n" );
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document.write( "thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #180265 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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/cgi-bin/show-face.mpl?user=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=180265\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the average rate of change of x^2+5x from x1=3 and x2=6<BR>\n" );
document.write( "Think of it as the slope between those two points.<BR>\n" );
document.write( "f(x) = x^2+5x<BR>\n" );
document.write( "f(3) = 3^2+5(3) = 9+15 = 24<BR>\n" );
document.write( "f(6) = 6^2+5(6) = 36+30 = 66<BR>\n" );
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document.write( "rise:66-24 = 42<BR>\n" );
document.write( "run: 6-3 = 3<BR>\n" );
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document.write( "Average rate of change = 42/3 = 14\r<BR>\n" );
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