Question

Which of the following sequences is an arithmetic sequence?

A. {1,4,16,48,…}
B. {−10,5,−2.5,1.25,…}
C. {100,20,4,0.8,…}
D. {−10,−3.5,3,9.5,…}

Answer 1

Explanation:

- 10 + 6.5 = - 3.5

- 3.5 + 6.5 = 3

3 + 6.5 = 9.5

9.5 + 6.5 = 16

{- 10, - 3.5, 3, 9.5,...}

Alternative D

I hope I helped you.