document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=542287>Question 542287</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the vertex<BR>\n" );
document.write( "f(x) = -10x^2-140x+495 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #354499 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=354499\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the vertex<BR>\n" );
document.write( "f(x) = -10x^2-140x+495<BR>\n" );
document.write( "---<BR>\n" );
document.write( "The vertex occurs where x = -b/(2a) = 140/(2*-10) = -7<BR>\n" );
document.write( "---<BR>\n" );
document.write( "f(-7) = -10(-7)^2-140(-7)+495 = 985<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Vertex: (-7,985)<BR>\n" );
document.write( "=============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=============== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );