document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1118705>Question 1118705</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A video tracking device recorded the height h, in metres, of a baseball after it was hit into the air. The data collected can be modelled by the quadratic relation h=-3(t-3)^2+18, where t is the time in seconds after the ball was hit.\r<BR>\n" );
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document.write( "a) What was the maximum height reached by the baseball?<BR>\n" );
document.write( "b) When did the baseball reach its maximum height?<BR>\n" );
document.write( "c) At what time(s) was the baseball at the height of 10m?<BR>\n" );
document.write( "d) Approximately when did the baseball hit the ground?\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734108 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=734108\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ------------------------------------------------------------------------<BR>\n" );
document.write( "h=-3(t-3)^2+18, where t is the time in seconds after the ball was hit. <BR>\n" );
document.write( "a) What was the maximum height reached by the baseball?<BR>\n" );
document.write( "b) When did the baseball reach its maximum height?<BR>\n" );
document.write( "c) At what time(s) was the baseball at the height of 10m?<BR>\n" );
document.write( "d) Approximately when did the baseball hit the ground? <BR>\n" );
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document.write( "The form of the equation indicates the maximum height or vertex.<BR>\n" );
document.write( "Maximum was 18 meters after 3 seconds.  (a).\r<BR>\n" );
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document.write( "(c)<BR>\n" );
document.write( "Time when 10 meters high<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3%28t-3%29%5E2%2B18=10 ALIGN=MIDDLE  ALT=\"-3%28t-3%29%5E2%2B18=10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3%28t-3%29%5E2=-8 ALIGN=MIDDLE  ALT=\"-3%28t-3%29%5E2=-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28t-3%29%5E2=8%2F3 ALIGN=MIDDLE  ALT=\"%28t-3%29%5E2=8%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t-3=0%2B-+sqrt%288%2F3%29 ALIGN=MIDDLE  ALT=\"t-3=0%2B-+sqrt%288%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=3%2B-+sqrt%288%2F3%29 ALIGN=MIDDLE  ALT=\"t=3%2B-+sqrt%288%2F3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=3%2B-+1.633 ALIGN=MIDDLE  ALT=\"t=3%2B-+1.633\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1.37 ALIGN=MIDDLE  ALT=\"t=1.37\"   DISABLED_style= \"max-width:90%; height:auto;\" >  or  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=4.63 ALIGN=MIDDLE  ALT=\"t=4.63\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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