document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=463716>Question 463716</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me to solve this problem. For the cost function c=0.4q^2+4q+5 , find the rate of change of c with respect to q when q=2 . </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #317678 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=317678\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For the cost function c=0.4q^2+4q+5 , find the rate of change of c with respect to q when q=2<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Begin by finding the first derivative of the function:<BR>\n" );
document.write( "c=0.4q^2+4q+5<BR>\n" );
document.write( "c'=0.8q+4<BR>\n" );
document.write( ".<BR>\n" );
document.write( "The \"rate of change\" when q=2:<BR>\n" );
document.write( "c'=0.8(2)+4<BR>\n" );
document.write( "c'=1.6+4<BR>\n" );
document.write( "c'=5.6<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );