document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=53174>Question 53174</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977258/algebrahomeworkh>Algebra and Trigonometry Structure and Method </A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A projectile is launched upward from the ground level with an initial speed of 98m/s.  How high will it go?  When will it return to the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #35604 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=35604\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y = -16x^2 + 98x<BR>\n" );
document.write( "0 = -16(x^2 - 6.125x)<BR>\n" );
document.write( "0 = (x - 3.0625)^2<BR>\n" );
document.write( "9.37890625 = (x - 3.0625)^2<BR>\n" );
document.write( "+- 3.0625 = x - 3.0625<BR>\n" );
document.write( "3.0625 +- 3.0625 = x<BR>\n" );
document.write( "6.125 seconds<BR>\n" );
document.write( "Mean: (0 + 6.125)/2 = 3.0625<BR>\n" );
document.write( "y = -16(3.0625)^2 + 98(3.0625)<BR>\n" );
document.write( "y = -16(9.890625) + 98(3.0625)<BR>\n" );
document.write( "y = -150.0625 + 300.125<BR>\n" );
document.write( "y = 150.0625m </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );