Which term of the sequence

Question

5, 14, 23, ....., is 239?

Answer 1

Rauna

This is an arithmetic sequence

a_{n =} a + (n-1) d

You know a = 5, d = 14 - 5 = 9 and you want to find n when a_n = 239

So 239 = 5 + 9 (n-1)

Just solve this for n

Mike