document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=694545>Question 694545</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Bob throws a ball vertically upward from the top of the cliff, the height of the ball above the base of the cliff is approximated by the model h = 6s + 10t- 5t where h is the height in metres and t is the time in seconds.\r<BR>\n" );
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document.write( "a) How high is the cliff?<BR>\n" );
document.write( "b) How long does it take the ball to reach a height of 50 metres above the cliff?<BR>\n" );
document.write( "c) After how many seconds does the ball hit the ground?\r<BR>\n" );
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document.write( "can you please help me out? I really don't understand. Thanks in advance :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428044 by </B><A HREF=/tutors/aboutme.mpl?userid=lynnlo><B>lynnlo(4176)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lynnlo><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=428044\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A=====65METERS<BR>\n" );
document.write( "B=====3SECONDS<BR>\n" );
document.write( "C====4.74SECONDS </SPAN>\n" );
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