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If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of

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Schools: ISB, Insead, Harvard, Wharton
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If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of [#permalink] New post 01 Sep 2012, 21:05
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

46% (02:48) correct 54% (00:29) wrong based on 26 sessions
If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of the following?

A. m/3
B. 9m
C. 9m^2
D. m^2/3
E. m^2/9
[Reveal] Spoiler: OA

Last edited by Bunuel on 02 Sep 2012, 01:02, edited 1 time in total.
Renamed and edited the question.
Intern
Intern
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Joined: 26 Aug 2012
Posts: 10
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: Easiest and Quickest way to solve this ? [#permalink] New post 01 Sep 2012, 21:48
m = 9 ^ (X-1)
m = 3 ^ (2x-2)
m^2 = 3 ^ (4x-4)
9m^2 = 3 ^ (4x-2)
Re: Easiest and Quickest way to solve this ?   [#permalink] 01 Sep 2012, 21:48
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If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of

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