Question

Given the arithmetic sequence an = −5 + 3(n − 1), what is the domain for n?

Answer 1

D because for a sequence you can't have a -1st term so b is out and a and c mean the same thing so neither of them can be the answer 

Answer 2

Answer: All integers where n ≥ 1

Step-by-step explanation:

We know that the domain of any sequence is the set of natural numbers $\mathbb{N}$.

Therefore, the domain for the given arithmetic sequence $a_n=-5+3(n-1)$ is the set of natural numbers.

Since we know that the set of natural numbers starts with digit 1.

Therefore, the domain of the given arithmetic sequence is all integers where n≥1.