document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=791790>Question 791790</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A ball was kicked into the air from a balcony 20 feet above the ground, and the ball's height above the ground in feet t seconds after the ball was kicked is h(t) = 20 - 16t2 + 32t. What was the maximum height, in feet, of the ball above the ground after it was kicked?<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 #498311 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=498311\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A ball was kicked into the air from a balcony 20 feet above the ground, and the ball's height above the ground in feet t seconds after the ball was kicked is h(t) = 20 - 16t2 + 32t. What was the maximum height, in feet, of the ball above the ground after it was kicked?<BR>\n" );
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document.write( "h(t) = (t) = - 16t2 + 32t + 20<BR>\n" );
document.write( "Max ht is at the vertex of the parabola, at t = -b/2a<BR>\n" );
document.write( "t = -32/-32 = 1<BR>\n" );
document.write( "h(1) = -16 + 32 + 20<BR>\n" );
document.write( "= 36 feet </SPAN>\n" );
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