The frog population at a lake doubles every week. the population can be modeled by f(x) = 15(2)x and f(6) = 960. what does the 2 represent?

The frog population at a lake doubles every week. The population can be modeled by f(x) = 15(2)x and f(6) = 960. What does the 2 represent?
The population after six weeks
The starting population
The rate the population increases.
The number of weeks that have passed.

29680

Step-by-step explanation:

Firstly 389×39=15171

Secondly 373×39=14547

Hence 15171+14547-38= 29680