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Which of the following is the formula for the geometric sequence? 3, 15, 75, 375 ... Answer an=3(5)n-1 an=5(3)n-1 an=12(3)n-1 an=5(12)n-1

Mathematics
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well the 1st term is 3 and the common ratio is 5 so \[T_{n} = ar^{n -1}\] is the formula for a term in a geometric series... substitute a = 3 and r = 5 into the formula to find the formula.
It would be A than (:

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Other answers:

well you have all the information just substitute and trust your algebra skills.
@Shadowys is it A or B
I go with B campbell sir.
I did it on my sheet.
@nubeer can you confirm if it B
its not B option
Sorry..... No idea but go with the tips given by @CarlosGP
So I'ma go with A or C
@nubeer Mis calculation it D
still wrong.. maybe read again the guidelines told by Campbell...
wow @ramirokool, you don't have a lot of confidence in your skills.
@campbell_st I know the answer A but no one won't confirm it..@nubeer Show step by step please.
@nubeer show me step by step I know it A
@jiteshmeghwal9 I GOT IT A
YESSSSSSSSSSSS LORD
ya its A
and it dont have any steps.. most step you need is done just find r and subsitute it.
Sorry bout that. I see you've got it. :)

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