document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=766437>Question 766437</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Height of a projectile above the ground is described by the function P(t)=-16t^2+640t\r<BR>\n" );
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document.write( "-When will the projectile get back to the ground, height = 0?\r<BR>\n" );
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document.write( "-When will the projectile be 3696 feet above ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #466901 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=466901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The Height of a projectile above the ground is described by the function P(t)=-16t^2+640t\r<BR>\n" );
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document.write( "-When will the projectile get back to the ground, height = 0?<BR>\n" );
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document.write( "P(t)=-16t^2+640t = 0<BR>\n" );
document.write( "Solve for t.<BR>\n" );
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document.write( "-When will the projectile be 3696 feet above ground?<BR>\n" );
document.write( "P(t)=-16t^2+640t = 3696<BR>\n" );
document.write( "Solve for t (might be 2 values, 1 going up, 1 coming down) </SPAN>\n" );
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