math
posted by tan .
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?

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. 
so what is the answer to the problem

where is the answer to this problem