The exponential function that would give the population after t years is given by:
[tex]P(t) = 100 \times 2^{\frac{t}{9}}[/tex]
An exponential function is modeled by:
[tex]y = ab^{\frac{x}{n}}[/tex]
In which:
Considering that the population starts with 100 individuals and doubles every 9 years, the parameters are given as follows:
a = 100, b = 2, n = 9.
Hence the function is given by:
[tex]P(t) = 100 \times 2^{\frac{t}{9}}[/tex]
More can be learned about exponential functions at https://brainly.com/question/25537936
#SPJ1