Answer:
B.

Explanation:
We have been given a function
. We are asked to find the amount a and the growth factor b in the exponential function.
We know that an exponential function is in form
, where,
y = Final amount.
a = Initial amount,
b = Growth factor,
x = Time
Upon comparing our given graph with exponential growth function, we can see that the initial value (a) is 14 and growth factor is 2.
Therefore, option B is the correct choice.