Answers

  • Brainly User
2016-06-29T08:13:10+08:00
An = a₁ + (n-1) (d)

a₁ = -3    d=2     an = 23

23 = -3 + (n-1) (2)

23 = -3 + 2n - 2

23 = 2n - 3 - 2

23 = 2n - 5

2n = 23 + 5

2n = 28

2n/2 = 28/2

n = 14

ANSWER:  There are 14 terms in the given sequence.
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