Question

HELP ASAP PLEASE REALLY CONFUSED: Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain.
TABLE:
n a(down carat)n
1 40
2 47
3 54

ANSW CHOICES:
a(down carat)n = 40 + 7(n − 1) where n ≥ 40
a (down carat)n = 40 + 7(n − 1) where n ≥ 1
a (down carat)n = 40 − 7(n − 1) where n ≥ 40
a (down carat) n = 40 − 7(n − 1) where n ≥ 1

Answer 1

Why not check out each of the four possible answer choices? Determine which one correctlly predicts the given sequence.

Answer 2

so plug-in, basically?

Answer 3

and then check?

Answer 4

@mathmale

Answer 5

Yes