document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=970764>Question 970764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> After t hours on a particular day, a freight train is s(t)=&#8722;17.98t+16.732t^2-0.78t^3 miles due east of its starting point (for 0&#8804;t&#8804;18).<BR>\n" );
document.write( "a) Where is the train (both distance and direction from starting point) after 9 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #593424 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=593424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> After t hours on a particular day, a freight train is <BR>\n" );
document.write( "s(t)= -17.98t + 16.732t^2 - 0.78t^3 miles due east of its starting point (for 0&#8804;t&#8804;18).<BR>\n" );
document.write( "a) Where is the train (both distance and direction from starting point) after 9 hours?<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "s(t)= -17.98t + 16.732t^2 - 0.78t^3<BR>\n" );
document.write( "Sub 9 for t<BR>\n" );
document.write( "---<BR>\n" );
document.write( "s(9)= -17.98*9 + 16.732*9^2 - 0.78*9^3<BR>\n" );
document.write( "Just arithmetic.<BR>\n" );
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