document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1038139>Question 1038139</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The drama club is building a backdrop using arches whose shape can be represented by the function f(x) = -x^2 + 2x + 8, where x is the length in feet. The area under each arch is to be covered with fabric.<BR>\n" );
document.write( "http://prntscr.com/bge4kt\r<BR>\n" );
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document.write( "What is the height of the arch?<BR>\n" );
document.write( "10 feet<BR>\n" );
document.write( "9 feet<BR>\n" );
document.write( "8 feet<BR>\n" );
document.write( "6 feet </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #652855 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=652855\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y = -x^2 + 2x + 8<BR>\n" );
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document.write( "The high point is the vertex.<BR>\n" );
document.write( "The vertex is on the LOS, the Line of Symmetry.<BR>\n" );
document.write( "The LOS equation is x = -b/2a<BR>\n" );
document.write( "x = -2/-2 = 1<BR>\n" );
document.write( "y at x = 1 --> -1 + 2 + 8<BR>\n" );
document.write( "= 9 feet<BR>\n" );
document.write( " </SPAN>\n" );
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