document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=805386>Question 805386</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If an object is projected vertically upward from ground level with an initial velocity of 280 ft/sec, then its distance s above the ground after t seconds is given by <BR>\n" );
document.write( "s = &#8722;10t2 + 280t.<BR>\n" );
document.write( " For what values of t will the object be more than 1710 feet above 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 #485208 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=485208\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Why are you using s for distance . D makes much more sense.\r<BR>\n" );
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document.write( "d = &#8722;10t2 + 280t<BR>\n" );
document.write( "1710 < &#8722;10t2 + 280t<BR>\n" );
document.write( "(t-19) (t-9)> 0<BR>\n" );
document.write( "9<t<19<BR>\n" );
document.write( "any time greater than  9 seconds and less than  19 seconds </SPAN>\n" );
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