Given the arithmetic sequence an = 3 + 2 (n - 1), what is the domain for n?

The set of all positive integers equal to or greater than 1

Step-by-step explanation:

n can take on the integer values 1 ... ∞

The formula for the nth term is a (n) = a (1) + 2 (n - 1)

First term: n = 1. Then a (1) = 3 + 2 (0) = 3 (as expected).

5th term: n = 5. Then a (5) = 3 + 2 (5 - 1) = 3 + 8 = 11

...

and so on.