Question

Suppose 15 animals are taken to an island, and then their population triples every 8 months. How many animals will there be in 4 years?

Answer 1

Wouldn't this answer be f(x) 15 * 4^x since it is 4 years instead of f(x) 15 * 3^x? Or am I wrong? I am going over this question too, so I need help.

Answer 2

f(x)= 15*3^x; 10,935 animals