Question

What is the 35th term of the arithmetic sequence where a1 = 13 and a17 = -51 ?

-126
-123
-120
-117

Answer 1

http://www.mathwords.com/a/arithmetic_sequence.htm

Answer 2

lol seems no one has answered this yet so i will...well first step is you need to find the common difference..how? we let a17 be our a_n so the formula... \[\Large A_n = A_1 + (n-1)d\] like i said we let A17 be An that means our n = 17

\[\large -51 = 13 + (17-1)d\]

can you try solving d?