Question

Determine if the sequence is geometric. If it is, find the common ratio.

1) -3,-18,-108,-648
2)3,4,5,6
3) 2,-4,8,-16
4) -3,-15,-75,-375

Answer 1

1. Geometric, ratio = 6

2. Arithmetic

3. Geometric, ratio = -2

4. Geometric, ratio = 5