A clothing store is having a sale on T-shirts. The first T-shirt you buy costs $7, and every additional shirt

costs only $5.

Let f(n) be the total cost of n shirts.

f is a sequence. What kind of sequence is it?

A clothing store is having a sale on T-shirts. The first T-shirt you buy costs $7, and every additional shirt

costs only $5.

Let f(n) be the total cost of n shirts.

f is a sequence. What kind of sequence is it?