Question

find the 110th term of the squence -7, 3, 13, 23

Answer 1

use this formula :
Tn = a1 + (n-1)d

here known n=110, a1 = -7, and d=10

Answer 2

First, I checked Rad's formula to see whether it would correctly predict the fourth term of the sequence (23). I let n=4. Result: 23, which is correct.

Ducky, your move.