## Algebra 2 (1st Edition)

$1219(1.12)^x$
Let $x$ be the number of years after $1992$. Then our initial amount is $1219$, and the percent increase is: $0.12$. Then the number of parakeets is ($0\leq x\leq11$): $1219(1+0.12)^x=1219(1.12)^x$