Answers

  • Brainly User
2016-06-26T01:19:19+08:00
General rule:  an = a₁ + (n-1)(d)

a₁ = 2        d (common difference) = 2

Substitute:

an = 2 + (n-1) (2)
an = 2 + 2n - 2
an = 2n   

ANSWER:  The rule for the nth term of the given sequence is an=2n.

Check:
a₁ = 2
a₁ = 2 (1)
a₁ = 2  (True)

a₄ = 8
a₄ = 2 (4)
a₄ = 8   (True)
1 5 1