The population of rabbits (P) can be expressed with an exponential model of the form:

Then, we need to find the values of a and b in order to calculate the population at the time t.
Let's take the population at time t1 to be P1 and the population at time t2 to be P2. then:

By taking the ratio of P1 to P2, we get:

We can solve for b by taking the natural logarithm on both sides of this expression:

By taking the first and the second row of the table, we can calculate b like this:

Now that we know the value of b, we only need to calculate a, we can do it like this:

Taking the data of the third row, we get:

Then, for the time 15 and 16, we get:
