Question

which sequences are geometric sequences? Check all that apply

Answer 1

Answer:
4, 2, 1, 1/2, 1/4...
2, 6, 18, 54, 162...
-4, -16, -64, -256...

Those are the geometric sequences because the factor is 1/2.
4/2=2
2/2=1
And so on,
The first one has a factor of three and the second has a factor of four.