document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=549773>Question 549773</A>: <I><SPAN STYLE=\"word-break: break-all;\"> h=-16t^2-32t+320 gives the height of a ball thrown downward from the top of a 320 foot building with an initial velocity of 32 feet per second. Find the time in seconds that it takes for the ball to reach a height of 48 feet. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358042 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=358042\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h=-16t^2-32t+320 gives the height of a ball thrown downward from the top of a 320 foot building with an initial velocity of 32 feet per second. Find the time in seconds that it takes for the ball to reach a height of 48 feet.<BR>\n" );
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document.write( "Set h=-16t^2-32t+320 = 48<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-16t%5E2-32t%2B+272+=+0 ALIGN=MIDDLE  ALT=\"-16t%5E2-32t%2B+272+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-t%5E2+-+2t+%2B+17+=+0 ALIGN=MIDDLE  ALT=\"-t%5E2+-+2t+%2B+17+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for t\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );