document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=218155>Question 218155</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the dolphin jumps out the water at a show, the function can be modeled by <BR>\n" );
document.write( "f(x)=-16x^2 times 32x, which the x is the time in second. find out what is the max. height, and how long does it take to reach that height, and how long will the dolphine stay in the air before he went back into the water.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #164841 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=164841\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the dolphin jumps out the water at a show, the function can be modeled by <BR>\n" );
document.write( "f(x)=-16x^2 times 32x, which the x is the time in second. find out what is the max. height, and how long does it take to reach that height, and how long will the dolphine stay in the air before he went back into the water. <BR>\n" );
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document.write( "f(x) = -16x^2 + 32x  (not times)<BR>\n" );
document.write( "max height is the vertex of the parabola<BR>\n" );
document.write( "at x = -b/2a = -32/(-32) = 1 second to max height<BR>\n" );
document.write( "Then 1 second to fall = 2 seconds total in air.<BR>\n" );
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document.write( "f(1) = -16 + 32 = 16 feet max height </SPAN>\n" );
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