Which of the following represents a geometric series (remember what a series is as opposed to a sequence)?

4, 12, 36,

4 + 12 + 36 +

4 + 12 + 20 +

4, 12, 20,

4 + 12 + 36 + ...

Step-by-step explanation:

4, 12, 36, ... is a geometric sequence, it has a common ratio of

When we add the terms of a geometric sequence we get a geometric series.

4+12+36+ ... is a geometric series, it has a common ratio of

4 + 12 + 20 + ... is not a geometric series because it has no common ratio

The second choice is correct

the f

last graph i believe

step-by-step explanation:

worked it out i believe

a

step-by-step explanation: