document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1114773>Question 1114773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object is projected directly upward from the ground. After t seconds its distance in feet<BR>\n" );
document.write( "above the ground is given by h(t) = -16t^2 + 160t.\r<BR>\n" );
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document.write( "a. How high is the projectile after 5 seconds?<BR>\n" );
document.write( "b. At what time(s) is the projectile 110 feet from the ground?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #729681 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=729681\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29+=+-16t%5E2+%2B+160t ALIGN=MIDDLE  ALT=\"h%28t%29+=+-16t%5E2+%2B+160t\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "a. How high is the projectile after <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=5+ ALIGN=MIDDLE  ALT=\"t=5+\"   DISABLED_style= \"max-width:90%; height:auto;\" >seconds?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29+=+-16t%5E2+%2B+160t ALIGN=MIDDLE  ALT=\"h%28t%29+=+-16t%5E2+%2B+160t\"   DISABLED_style= \"max-width:90%; height:auto;\" >....plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5 ALIGN=MIDDLE  ALT=\"5\"   DISABLED_style= \"max-width:90%; height:auto;\" > for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%285%29+=+-16%285%29%5E2+%2B+160%2A5 ALIGN=MIDDLE  ALT=\"h%285%29+=+-16%285%29%5E2+%2B+160%2A5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%285%29+=+-16%2A25+%2B+160%2A5 ALIGN=MIDDLE  ALT=\"h%285%29+=+-16%2A25+%2B+160%2A5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%285%29+=+-400+%2B+800 ALIGN=MIDDLE  ALT=\"h%285%29+=+-400+%2B+800\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%285%29+=+400+ ALIGN=MIDDLE  ALT=\"h%285%29+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" > feet from the ground\r<BR>\n" );
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document.write( "b. At what time(s) is the projectile <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=110 ALIGN=MIDDLE  ALT=\"h=110\"   DISABLED_style= \"max-width:90%; height:auto;\" > feet from the ground? \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29+=+-16t%5E2+%2B+160t ALIGN=MIDDLE  ALT=\"h%28t%29+=+-16t%5E2+%2B+160t\"   DISABLED_style= \"max-width:90%; height:auto;\" >....plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=110 ALIGN=MIDDLE  ALT=\"110\"   DISABLED_style= \"max-width:90%; height:auto;\" > for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h ALIGN=MIDDLE  ALT=\"h\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=110+=+-16t%5E2+%2B+160t ALIGN=MIDDLE  ALT=\"110+=+-16t%5E2+%2B+160t\"   DISABLED_style= \"max-width:90%; height:auto;\" >...solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=16t%5E2-160t%2B110+=+0+ ALIGN=MIDDLE  ALT=\"16t%5E2-160t%2B110+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" >....use quadratic formula\r<BR>\n" );
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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;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-%28-160%29+%2B-+sqrt%28+%28-160%29%5E2-4%2A16%2A110+%29%29%2F%282%2A16%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-%28-160%29+%2B-+sqrt%28+%28-160%29%5E2-4%2A16%2A110+%29%29%2F%282%2A16%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28160+%2B-+sqrt%28+25600+-7040+%29%29%2F32+ ALIGN=MIDDLE  ALT=\"t+=+%28160+%2B-+sqrt%28+25600+-7040+%29%29%2F32+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28160+%2B-+sqrt%28+18560+%29%29%2F32+ ALIGN=MIDDLE  ALT=\"t+=+%28160+%2B-+sqrt%28+18560+%29%29%2F32+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28160+%2B-+136.23509%29%2F32+ ALIGN=MIDDLE  ALT=\"t+=+%28160+%2B-+136.23509%29%2F32+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28160%2F32+%2B-+136.23509%2F32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28160%2F32+%2B-+136.23509%2F32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%285+%2B-+4.2575%29+ ALIGN=MIDDLE  ALT=\"t+=+%285+%2B-+4.2575%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+9.26 ALIGN=MIDDLE  ALT=\"t+=+9.26\"   DISABLED_style= \"max-width:90%; height:auto;\" > seconds<BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+0.74 ALIGN=MIDDLE  ALT=\"t+=+0.74\"   DISABLED_style= \"max-width:90%; height:auto;\" >  seconds\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );