SOLUTION
An exponential function is a function whose constant term is raised to a power,
there is no constant term in the given function,
Hence it is not an Exponential function
A linear function is a function of degree 1 that the highest power of x is 1
in the given function the power of x is 3
Hence it is not a linear function
Therefore there is no enough information to determine the function.
The table for the function is