document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1034991>Question 1034991</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a ball is shot out of a homemade air cannon. it flies through the air such that its height as a function of time is given by <BR>\n" );
document.write( "h=-16t^2+64t+10<BR>\n" );
document.write( "where h is the height of the ball and t is the time since if was fired in seconds. \r<BR>\n" );
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document.write( "max estimates that it takes 4 seconds for the ball to hit the ground and cole estimates it takes 5 seconds. algebraically determine who is closer and support your answer.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #649639 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=649639\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given that the height, h(t), is given by<BR>\n" );
document.write( "h(t) = -16t^2 + 64t + 10<BR>\n" );
document.write( "we need to find t when h = 0, so set it equal to zero and solve...<BR>\n" );
document.write( "-16t^2 + 64t + 10 = 0<BR>\n" );
document.write( "8t^2 - 32t - 5 = 0<BR>\n" );
document.write( "Use the quadratic formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and we get<BR>\n" );
document.write( "t = 4.15 seconds (or so)<BR>\n" );
document.write( "Max is closer. </SPAN>\n" );
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