Question

The first five terms of a linear sequence are: 11, 5, -1, -7, -13 What is the 10th term in this sequence?

A. -60
B. 43
C. -26
D. -19​

Answer 1

-43 (B) It should be negative.

Explanation:

Arithmetic Sequence: An = A1 + (n-1)d

d=common difference

d= A2-A1, so 5-11 = -6

d= -6

Because we are looking for the 10th term, plug in 10 where it says n.

A 10 = 11 + (10-1)-6

= -43