document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=146370>Question 146370</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help. \r<BR>\n" );
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document.write( "Sky divers.  Bob and Betty simultaneously jump from two airplanes at different altitudes.  Bob’s altitude t seconds after leaving the plane is -16t^2 + 6600 feet.  Betty’s altitude t seconds after leaving the plane is -16t^2 + 7400 feet.  Write a polynomial that represents the difference between their altitudes t seconds after leaving the planes.  What is the difference between their altitudes 3 seconds after leaving the planes?\r<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 #106860 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=106860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Bob’s altitude t seconds after leaving the plane is -16t^2 + 6600 feet. Betty’s altitude t seconds after leaving the plane is -16t^2 + 7400 feet. Write a polynomial that represents the difference between their altitudes t seconds after leaving the planes. What is the difference between their altitudes 3 seconds after leaving the planes? <BR>\n" );
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document.write( "Bob's altitude after 3 seconds:<BR>\n" );
document.write( "a(t) = -16t^2+6600 = <BR>\n" );
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document.write( "Betty's altitude after 3 seconds:<BR>\n" );
document.write( "b(t) = -16t^2+ 7400<BR>\n" );
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document.write( "Difference polynomial<BR>\n" );
document.write( "h(t) = b(t)-a(t) = 800 ft<BR>\n" );
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document.write( "After 3 seconds the difference is 800 ft.<BR>\n" );
document.write( "It continues to be 800 ft. till Bob hits the ground or releases his parachute.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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