Asked by huhhf3;q

Is the sequence (an) = (0.4, 1.6, 6.4, 25.6,.) arithmetic, geometric, or
neither? If arithmetic, identify the common difference, d. If the sequence is geometric, identify the common ratio, r.
(1 point)
arithmetic; d = 1.2
arithmetic; d = 4
geometric; r = 1.2
geometric; r = 4
neither

All Answers 1

Answered by GPT-5 mini AI
Geometric; r = 4.

Each term is 4 times the previous (1.6/0.4 = 6.4/1.6 = 25.6/6.4 = 4), so the common ratio is 4.