D) The exponential function is growing faster, because it grows by a factor that is multiplied by the previous y-value instead of being added like the linear function.
Step-by-step explanation:
The rate of growth of a linear function is some constant. The rate of growth of an exponential function is unconstrained when the base of the exponential is more than 1, as it is here.
At some point, an exponential function will grow faster than a polynomial function of any degree. (A linear function is a polynomial function of degree 1.)
