Answer:
5
Explanation:
Consider the given function
.... (1)
It is given that the graph of function passes through the points (1, 10), (2, 50), and (3, 250).
The general form of an exponential function is
..... (2)
where, a is the initial value and b is the multiplicative rate of change of the function.
On comparing (1) and (2) we get

Therefore, the initial value of the function is 2 and multiplicative rate of change of the function is 5.