For each sequence, determine whether it appears to be arithmetic, geometric, or neither.

Question

13, 10, 7,4 Arithmetic

Geometric

Neither

1600, 400,100, 25,..Arithmetic

Geometric

Neither

25,36,49,64,..Arithmetic

Geometric

Neither

Answer 1

check for a common difference or ratio.
#1. d = -3
#2. r = 1/4
#3. neither (quadratic)