Vera uploaded a hilarious video of a squirrel to a funny videos website. It was viewed $320$ times on the first day. Each day since then, the number of views was $25\%$ more than the day before. Let $f(n)$ be the number of views Vera's video got on the $n^\text{th}$ day since she uploaded it. **$f$ is a sequence. What kind of sequence is it?** [[☃ radio 1]] **Write an explicit formula for the sequence.** $f(n)=$ [[☃ expression 1]]