Question

What is the common ratio for geometric sequence: 5,15,45,135 ?​

Answer 1

the common ratio is 3

Explanation:

to solve for the common ratio, I like to take the second term and divide it by the first term

15/5 = 3

then I will check the rest of the terms

15*3 = 45

45*3 = 135

It looks like the common ratio is correct!