Answer: Exponential growth.
Step-by-step explanation:
1. You have the following function:
2. By definition, an exponential function has the following form:
Where <em>a </em>is the coefficient,<em> b</em> is the base and <em>x</em> is the exponent.
3. The growth of this function is non-linear, because the rate of growth is not constant.
4. For example if in the function given in the problem x=4, this means that y=3(1.5*1.5*1.5*1.5)
5. Therefore, the answer is exponential growth.