document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=458716>Question 458716</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Essay; show all work. Consider that the age, x, of a unicorn in human\r<BR>\n" );
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document.write( "equivalent years can be given by the formula f(x) = - 0.001618x^4 + \r<BR>\n" );
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document.write( "0.057326x^3 – 1.1367x^2 + 11.46x + 2.914. When a unicorn is 2.5 years old, what \r<BR>\n" );
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document.write( "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 #314793 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=314793\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For some reason I have seen this exact problem four or five times the past few months on this site.\r<BR>\n" );
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document.write( "To find the human's equivalent age, simply replace all occurrences of \"x\" with \"2.5\" and simplify. Do the same with x = 12. For example,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE f(2.5) = -0.001618(2.5)^4 + 0.057326(2.5)^3 - 1.1367(2.5)^2 + 11.46(2.5) + 2.914 = 27.7921 yr\">\r<BR>\n" );
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document.write( "Update: You had asked how to simplify the problem. The best way is simply to evaluate the expression using a calculator. If you have a graphing calculator, perhaps you could enter the function for f(x), then evaluate f(2.5) and f(12). </SPAN>\n" );
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