document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1158962>Question 1158962</A>: <I><SPAN STYLE=\"word-break: break-all;\"> April shoots an arrow upward into the air at a speed of 64 feet per second from a platform that is 11 feet high. The height of the arrow is given by the function h(t)= -16t^2 + 64t +11, where t is the time is seconds. What is the maximum height of the arrow?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #781958 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=781958\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  h(t)= -16t^2 + 64t +11<BR>\n" );
document.write( "the maximum height is at the vertex, and the x value of the vertex is at -b/2a or -64/-32 or +2 seconds.<BR>\n" );
document.write( "h(2)=-64+128+11<BR>\n" );
document.write( "=75 feet\r<BR>\n" );
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