document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206396>Question 1206396</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Stein Glass, Inc., makes parabolic headlights for a variety of automobiles.  If one of its headlights has a parabolic surface generated by the parabola x^2 = 12y, where should its light bulb be placed?  (Hint: Solve the equation for y before you start finding the focus.)\r<BR>\n" );
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document.write( "A. 3 units<BR>\n" );
document.write( "B. 12 units<BR>\n" );
document.write( "C. 4 units<BR>\n" );
document.write( "D. 48 units<BR>\n" );
document.write( "E. 36 units<BR>\n" );
document.write( "F. 2 units </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843833 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52806)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=843833\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Stein Glass, Inc., makes parabolic headlights for a variety of automobiles. <BR>\n" );
document.write( "If one of its headlights has a parabolic surface generated by the parabola x^2 = 12y, <BR>\n" );
document.write( "where should its light bulb be placed? (Hint: Solve the equation for y before you start finding the focus.)<BR>\n" );
document.write( "A. 3 units<BR>\n" );
document.write( "B. 12 units<BR>\n" );
document.write( "C. 4 units<BR>\n" );
document.write( "D. 48 units<BR>\n" );
document.write( "E. 36 units<BR>\n" );
document.write( "F. 2 units<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "When a parabola is presented by an equation x^2 = ay in this vertex form,\r\n" );
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document.write( "the focus is located at the distance  f = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2F4 ALIGN=MIDDLE  ALT=\"a%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > from the vertex.\r\n" );
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document.write( "In this problem, the focus is located at the distance  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F4 ALIGN=MIDDLE  ALT=\"12%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 3 units from the vertex.\r\n" );
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document.write( "<U>ANSWER</U>.  Light buble should be placed at 3 units from the vertex.\r\n" );
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document.write( "         Option (A).\r\n" );
document.write( "</PRE>\r<BR>\n" );
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document.write( "Solved.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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