Question

Identify the 27th term of an arithmetic sequence where a1 = 38 and a17 = –74.

Answer 1

Do you want to try solving it yourself? The general term in an arithmetic sequence is\[a_n=a_1+d(n-1)\]where d is the common difference.

Answer 2

I've tried I keep getting the wrong answer :/

Answer 3

Ok first let's try finding the common difference d.\[a_{17}=a_1+d(17-1)\]This should be easy.

Answer 4

Just substitute for a1 and a17.

Answer 5

I did.

Answer 6

What did you get?