Urgently need on this word ! me out : )

B there were 4 ducks living in Anoops pond when he first built it

Step-by-step explanation:

The equation is in the form

y = a b^x

The a  is the initial value at time x =0

The b is the growth rate

x is the time

So

4 * 3^t

4 is the initial amount of ducks

3 is the growth rate, or the duck population increase by a factor of 3 each time period

t is the time period in years