Find the inverse of the function to tell if it is odd. Generally, the function with an odd exponent will be the answer, but we must check. If the inverse of the function is opposite the original function, than it is odd.
f(x)=0.8x^3
f(-x)=0.8(-x)^3
there is only one term, and -x makes the term negative in the inverse
your answer if f(x)=0.8x^3
If you look at the table, you will see the values go down and then up, meaning the function is a hyperbola. Hyperbolic functions always have x^4.
you answer is 4