Answer:
B. 1, 4, 16, 64...
D. 2, 8, 32, 128...
To find a common ratio, you divide each term by the previous term.
So, let's do it for each sequence.
A.
6 / 2 = 3
10 / 6 = 1.6667
It is incorrect because we did not get 4.
B.
4 / 1 = 4
16 / 4 = 4
It is correct because we got 4.
C.
400 / 1600 = 1/4
100 / 400 = 1/4
It is incorrect. The common ratio is 1/4.
D.
8 / 2 = 4
32 / 8 = 4
It does have a common ratio of 4. It is correct.
E.
12 / 16 = 0.75
8 / 12 = 0.6667
It does not have a common ratio of 4.
F.
1/8 / 1/2 = 1/4
1/32 / 1/8 = 1/4
It does not have a common ratio of 4. It has a common ratio of 1/4.
