Question

Which explains why the sequence 64, 4, 1/4,......is arithmetic or geometric?

A. The sequence is geometric because it decreases by a factor 1/16
B. The sequence is arithmetic because it decreases by a factor of 1/16
C. The sequence is geometric because it increases by a factor of 4
D. The sequence is arithmetic because it decreases by a factor of 4.

Answer 1

Your answer is A. Hope this helps! 

Answer 2

The answer is A. A geometric series is a series which does not decrease by the same amount. Instead, you are multiplying or dividing by the same amount each time. In this case, it's 1/16.