document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=304649>Question 304649</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me with this problem?\r<BR>\n" );
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document.write( "Throwing a wrench. An angry construction worker throws<BR>\n" );
document.write( "his wrench downward from a height of 128 feet with an<BR>\n" );
document.write( "initial velocity of 32 feet per second. The height of the<BR>\n" );
document.write( "wrench above the ground after t seconds is given<BR>\n" );
document.write( "by S(t)= 16t^2  32t + 128.<BR>\n" );
document.write( "a) What is the height of the wrench after 1 second?<BR>\n" );
document.write( "b) How long does it take for the wrench to reach the<BR>\n" );
document.write( "ground?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #218174 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=218174\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> S(t)= 16t^2  32t + 128.<BR>\n" );
document.write( "a) What is the height of the wrench after 1 second?<BR>\n" );
document.write( "S(1) = -16 - 32 + 128<BR>\n" );
document.write( "= 80 feet<BR>\n" );
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document.write( "b) How long does it take for the wrench to reach the<BR>\n" );
document.write( "ground?<BR>\n" );
document.write( "16t^2  32t + 128 = 0<BR>\n" );
document.write( "t^2 + 2t - 8 = 0<BR>\n" );
document.write( "(t+4)*(t-2) = 0<BR>\n" );
document.write( "t = 2 seconds<BR>\n" );
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