document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1201821>Question 1201821</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A hovercraft takes off from a platform.Its height (in meters), x seconds after takeoff, is modeled by:h(x)=−3(x−3)^2 +108 What is the height of the hovercraft at the time of takeoff? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #836337 by </B><A HREF=/tutors/aboutme.mpl?userid=carrollmary87><B>carrollmary87(4)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=carrollmary87><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=836337\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -3(x - 3)^2 + 108 First FOIL (x - 3)(x - 3) = x^2 - 6x + 9<BR>\n" );
document.write( "Then -3(x^2 - 6x + 9) + 108 Distribute the -3<BR>\n" );
document.write( "-3x^2 + 18x - 27 + 108 Now combine the like terms.<BR>\n" );
document.write( "-27 + 108 = 81  This is the y-intercept, so this is where the plane takes off.  It is the initial height.<BR>\n" );
document.write( "What is the height of the hovercraft at the time of takeoff?  81 meters.  You could have also graphed it on Desmos.com and solved it as well. </SPAN>\n" );
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