document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=401223>Question 401223</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.003518x4 + 0.087326x3 – 1.3367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is 12 years old?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #283947 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=283947\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Just replace x = 2.5 and x = 12 to find the human's age, and evaluate the expression.\r<BR>\n" );
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document.write( "However, I'm wondering if you supplied the right equation, or the textbook wrote a very poor question. If you know a little about limits you can determine that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=lim%28x-%3Einfinity%2C+f%28x%29%29 ALIGN=MIDDLE  ALT=\"lim%28x-%3Einfinity%2C+f%28x%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is negative infinity. In other words, once the unicorn gets older, the human's age decreases...... </SPAN>\n" );
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