Question

Which function gives the correct recursive formula for the sequence?

2, 7, 12, 17, 22, 27


(1 point)
Responses

a1 = 5; an = an −1 +2

a1 = 5; an = an −1 +2


a1 = 7; an = an−1 + 2

a1 = 7; an = an−1 + 2


a1 = 2; an = an −1 +5

a1 = 2; an = an −1 +5


a1 = 2; an = an −1 + 7

Answer 1

The sequence increases by 5 each time, so the correct recursive formula is

a1 = 2; a_n = a_{n-1} + 5.