Question

A. Which sequence is a geometric sequence?

b. Which sequence is an arithmetic sequence?

A. a. 80, 40, 20, 10, … b. 5, 10, 15, 20, …
B. a. 2, 4, 6, 8, 10, … b. 1, 3, 9, 27, …
C. a. −12, −6, 0, 6, … b. 2, 4, 8, 16, …
D. a. 10, 7, 4, 1, −2, … b. 4, 20, 100, 500, …

Answer 1

A. a. 80, 40, 20, 10, … b. 5, 10, 15, 20, …

Explanation:

a. 80, 40, 20, 10, …

Common ratio of ½

b. 5, 10, 15, 20, …

Common difference of 5