Question

Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain.


n an
1 40
2 47
3 54
an = 40 + 7(n − 1) where n ≥ 40
an = 40 + 7(n − 1) where n ≥ 1
an = 40 − 7(n − 1) where n ≥ 40
an = 40 − 7(n − 1) where n ≥ 1

Answer 1

i think its b but idk