Answer:
The correct option is B. The growth factor of f(x) is less than the growth factor of g(x).
Explanation:
In an exponential function

Where (1+r) is growth factor and r is the growth rate.
The given function is

Therefore growth factor of f(x) is 3.
From the graph it is noticed that it is an exponential function which is passing through (0,1) and (1,5).
Let the equation of g(x) is




The graph passing through (1,5). so we get


Therefore the value of a is 1 and value of b is 5.
The equation of g(x) is

Therefore growth factor of g(x) is 5.
Since 3<5, therefore we can say that the growth factor of f(x) is less than the growth factor of g(x). Option B is correct.