document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=154331>Question 154331</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.5x^2+14x+10, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #113641 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=113641\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> wow..the \"Hallelujah\" chorus...one of my favorites\r<BR>\n" );
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document.write( "the peak (maximum) is on the axis of symmerty<BR>\n" );
document.write( "__ the general equation is x=-b/2a<BR>\n" );
document.write( "__ in this case, x=-14/[2(-0.5)] __ x=-14/(-1) __ x=14<BR>\n" );
document.write( "__ so, sales peak on the 14th day\r<BR>\n" );
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document.write( "to find the number of tickets, substitute into the equation<BR>\n" );
document.write( "__ N=-.05(14)^2+14(14)+10 __ N=108 </SPAN>\n" );
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