document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=888584>Question 888584</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the x-coordinate of the vertex of a parabola defined by the function f(x) = -7x2 + 9x + 8. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #537481 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=537481\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) = -7x^2 + 9x + 8 ---> a = -7, b = 9, c = 8\r<BR>\n" );
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document.write( "x = -b/(2a)\r<BR>\n" );
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document.write( "x = -9/(2*(-7))\r<BR>\n" );
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document.write( "x = <font color=\"red\">9/14</font> </SPAN>\n" );
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