Which of the following describes the growth rate of the exponential function in the graph below?
3.27)
For each x increase of 1, the y increases by a common difference of 3.
For each x increase of 1, the y increases by a common factor of 3.
For each x increase of 1, they increases by 4 more than the previous increase.
For each x increase of 1, the y increases by doubling and then adding 1.