document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=76800>Question 76800</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me with this question or a similar one Please?<BR>\n" );
document.write( "A gun fires a bullet almost straight up from the edge of a 150-foot cliff. If the bullet leaves the gun with a speed of 394 feet per second, its height at time t is given by h(t)=-16t^2+394t+150, measured from the ground below the cliff. When will the bullet land on the ground below the cliff? (Hint: What is its height when it lands? Remember that we are measuring from the ground below, not from the cliff.) \r<BR>\n" );
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document.write( "Thank You,<BR>\n" );
document.write( "Sabrina<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 #55048 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=55048\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A gun fires a bullet almost straight up from the edge of a 150-foot cliff. If the bullet leaves the gun with a speed of 394 feet per second, its height at time t is given by h(t)=-16t^2+394t+150, measured from the ground below the cliff. When will the bullet land on the ground below the cliff? (Hint: What is its height when it lands?<BR>\n" );
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document.write( "It's height will be 0 when it lands, right?  Therefore h = 0, so we have:<BR>\n" );
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document.write( "-16t^2 + 394t + 150 = 0; solve for t, the positive solution is what we want<BR>\n" );
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document.write( "Use the quadratic formula, a=-16; b=394; c=150<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" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-394+%2B-+sqrt%28+394%5E2-+4+%2A+-16+%2A+150+%29%29%2F%282%2A-16%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-394+%2B-+sqrt%28+394%5E2-+4+%2A+-16+%2A+150+%29%29%2F%282%2A-16%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-394+%2B-+sqrt%28155236+-+%28-9600%29+%29%29%2F%28-32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-394+%2B-+sqrt%28155236+-+%28-9600%29+%29%29%2F%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-394+%2B-+sqrt%28155236+%2B+9600+%29%29%2F%28-32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-394+%2B-+sqrt%28155236+%2B+9600+%29%29%2F%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-394+%2B-+sqrt%28164836+%29%29%2F%28-32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-394+%2B-+sqrt%28164836+%29%29%2F%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "1st solution:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-394+-+406+%29%2F%28-32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-394+-+406+%29%2F%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+%28-800%29%2F%28-32%29+ ALIGN=MIDDLE  ALT=\"t+=+%28-800%29%2F%28-32%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "t = +25 seconds, this is only solution we care about. <BR>\n" );
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document.write( "Make sense to you? I hope it did.<BR>\n" );
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