The answer is C most likey
15 because simple division 30 divided by 2 is 15 only 15 can happen
Can you please add the picture with the problem, then I will answer your question ?
The next terms in the sequence will be multiplied by c, but the common ratio is still the same
example :
S = [1(3)^4 - 1]/ [3-1] = 80/2 - 40
Hope this helps
