document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=459217>Question 459217</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the average rate of change of f(x) 3x^2-4x from x=3 to x=6 . \r<BR>\n" );
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document.write( "Simplify your answer as much as possible.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #314959 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=314959\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the average rate of change of f(x) 3x^2-4x from x=3 to x=6 . \r<BR>\n" );
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document.write( "Simplify your answer as much as possible. <BR>\n" );
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document.write( "f(x) = 3x^2 - 4x<BR>\n" );
document.write( "The average rate of change is the change in f(x) divided by the change in x.  <BR>\n" );
document.write( "So we can write<BR>\n" );
document.write( "rate of change = r = (f(6) - f(3))/(6 - 3)<BR>\n" );
document.write( "f(6) = 3(6)^2 - 4(6) = 84<BR>\n" );
document.write( "f(3) = 3(3)^2 - 4(3) = 15<BR>\n" );
document.write( "So r = (84-15)/(6-3) = 23 </SPAN>\n" );
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