Posted by **tan** on Sunday, July 17, 2011 at 8:58pm.

Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001618x4 + 0.057326x3 – 1.1367x2 + 11.46x + 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?

- math -
**MathMate**, Sunday, July 17, 2011 at 9:32pm
substitute x=2.5 or x=12 in the given formula and evaluate the function to get the human equivalent years.

For example,

f(2.5)=- 0.001618(2.5)^4 + 0.057326(2.5)^3 – 1.1367(2.5)^2 + 11.46(2.5) + 2.914

Post your answer for a check if you wish.

- math -
**kim**, Saturday, September 17, 2011 at 8:40pm
so what is the answer to the problem

- math -
**kim**, Saturday, September 17, 2011 at 8:42pm
where is the answer to this problem

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