Question

What is the 35th term of the arithmetic sequence where a1 = 13 and a17 = -67?

Answer 1

a(n) = a(1) + (n - 1)d

a(17) = -67
a(1) + (17 - 1)d = -67
13 + 16d = -67
16d = -67 - 13
16d = -80
d = -80/16
d = -5

a(35)
= a(1) + (35 - 1)d
= 13 + 34(-5)
= 13 - 170
= -157

Answer 2

thank you soooo much!!!!

Answer 3

Anytime.