document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=450003>Question 450003</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) = -0.3x^2 + 7.8x + 14, 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?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #309572 by </B><A HREF=/tutors/aboutme.mpl?userid=rwm><B>rwm(914)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rwm><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=309572\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -b/2a<BR>\n" );
document.write( "-7.8/2*(-.3)<BR>\n" );
document.write( "13<BR>\n" );
document.write( "plug in 13 for x\r<BR>\n" );
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document.write( "On day 13,<BR>\n" );
document.write( " 64.7 tickets are sold.\r<BR>\n" );
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