document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1036083>Question 1036083</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Evaluate <BR>\n" );
document.write( "h(x) = 6x+9 and f(x)=8x^2-4 \r<BR>\n" );
document.write( "\n" );
document.write( "a) f(-3)-h(-3)\r<BR>\n" );
document.write( "\n" );
document.write( "b) (f+h)(2)\r<BR>\n" );
document.write( "\n" );
document.write( "c) (foh)(x)\r<BR>\n" );
document.write( "\n" );
document.write( "d) (hof)(x) \r<BR>\n" );
document.write( "\n" );
document.write( "This is confusing.Thank you for your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #650689 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=650689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(-3)=8(-3)^2-4=68<BR>\n" );
document.write( "h(-3)=6(-3)+9=-9<BR>\n" );
document.write( "Their difference is 59. A<BR>\n" );
document.write( "f+h=8x^2+6x+5. Substitute (2) is for x, and the result is 32+12+5=49  B<BR>\n" );
document.write( "(f o h)(x) is f(h(x).  But h(x)=6x=9.  that is substituted for each x in f.<BR>\n" );
document.write( "That is 8(6x+9)^2-4=8(36x^2+108x+81)-4, or 288x^2+864x+644<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "(h o f)(x)=h (f(x)) and substitute f(x) for the x in h(x)<BR>\n" );
document.write( "6(8x^2-4)+9=48x^2-15<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );