document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=633364>Question 633364</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At time  t = 0  a slingshot fires an egg straight up from a window of a tall building.  The height of the egg above ground as a function of time is given by  <BR>\n" );
document.write( "y = -4.9t2 + 21t + 56,  where  y  is in meters and  t  is in seconds.  a. How high up is the window?  b. How high is the egg after 3 s?  c. After launching the egg, how long does the shooter have to wait to see the egg go by the window on the way down?  d. At what times is the egg 65 m above ground?  (Solve with the quadratic formula; then check your work using the trace feature of a graphing calculator.)  e. When does the egg impact 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 #398890 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=398890\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a)The window is 56 meters above the ground.<BR>\n" );
document.write( "b) 74.9 meters<BR>\n" );
document.write( "c)t=4.28571<BR>\n" );
document.write( "d)t=3.80271 t=0.483007<BR>\n" );
document.write( "e)t=6.14541 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );