document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1159605>Question 1159605</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7.	The path of a paper airplane can be modeled approximately by the function h= -0.3t^2 + t + 1.5 , where h is the height above ground, in metres, and t is the time in seconds.  Determine how long it takes for the paper airplane to hit 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 #782657 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=782657\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h= -0.3t^2 + t + 1.5 <BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "-0.3t^2 + t + 1.5 = 0<BR>\n" );
document.write( "Solve for t\r<BR>\n" );
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