If a population growing exponentially double in size in 3 years, what is the intrinsic rate of increase (r) of the population?

Explanation

To find the intrinsic rate of increase (r) of a population that doubles in size in 3 years, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Exponential Growth Model**:
The equation for exponential growth is given by:
\[
n_T = n_0 e^{rT}
...