document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=159118>Question 159118</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A ball is thrown downward from a window in a tall building. Its position in time t in seconds is s=16t^2 + 32t, where s is in feet. how long (to the nearest tenth) will it take the ball to fall 175 feet? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #117232 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=117232\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> s=16t^2 + 32t<BR>\n" );
document.write( "175=16t^2+32t<BR>\n" );
document.write( "16t^2+32t-175=0<BR>\n" );
document.write( "Using the quadratic equatuion:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > We get:<BR>\n" );
document.write( "t=(-32+-sqrt[32^2-4*16*-175])/2*16<BR>\n" );
document.write( "t=(-32+-sqrt[1,024+11,200])/32<BR>\n" );
document.write( "t=(-32+-sqrt[12,224]/32<BR>\n" );
document.write( "t=(-32+-110.56)/32<BR>\n" );
document.write( "t=(-32+110.56)/32<BR>\n" );
document.write( "t=(78.56)/32<BR>\n" );
document.write( "t=2.5 seconds. <BR>\n" );
document.write( " </SPAN>\n" );
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