A population grows according to an exponential growth model. The initial population is $\displaystyle {P}_{{0}}={17}$, and the growth rate is $\displaystyle {r}={0.25}$.

Then:

$\displaystyle {P}_{{1}}$ =
$\displaystyle {P}_{{2}}$ =

Find an explicit formula for $\displaystyle {P}_{{n}}$. Your formula should involve $\displaystyle {n}$.

$\displaystyle {P}_{{n}}$ = Preview Question 6 Part 3 of 4  

Use your formula to find $\displaystyle {P}_{{12}}$

$\displaystyle {P}_{{12}}$ =

Give all answers accurate to at least one decimal place