Question

In the 1st generation, there are 4 monkeys on the island.....

Answer 1

General explicit formula:
$a_n = a_1 (r^{n-1})$

You are given initial value of 4. 
a1 = 4

The rate of growth is it doubles every generation or multiplies by 2.
r = 2

Answer:
$a_n = 4 (2^{n-1})$

Answer 2

Answer:

you're answer is letter D.

Step-by-step explanation: