document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1175980>Question 1175980</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bullet is shot directly upward. Its height (h) in feet above the ground at the end of t seconds is given by quadratic function h(t)=1600t-16t².\r<BR>\n" );
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document.write( "a. When does the bullet reach its maximum height?<BR>\n" );
document.write( "b. How high does the bullet go? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #801808 by </B><A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><B>CubeyThePenguin(3113)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CubeyThePenguin><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=CubeyThePenguin><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=801808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) max height reached at -b/2a\r<BR>\n" );
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document.write( "h(t) = -16t^2 + 1600t\r<BR>\n" );
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document.write( "-b/2a = 1600/32 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50 ALIGN=MIDDLE  ALT=\"50\"   DISABLED_style= \"max-width:90%; height:auto;\" > seconds\r<BR>\n" );
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document.write( "b) We want the solutions to -16t^2 + 1600t = 0.\r<BR>\n" );
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document.write( "t = 0 or t = 100. Time can't be zero or negative, so the bullet reaches the ground after 100 seconds. </SPAN>\n" );
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