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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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Intern
Joined: 09 Mar 2011
Posts: 15

Kudos [?]: 7 [0], given: 3

Location: Mumbai
If m=9^(x−1), then in terms of m, 3^(4x−2) must be which of [#permalink]

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01 Sep 2012, 22:05
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Difficulty:

45% (medium)

Question Stats:

41% (01:41) correct 59% (00:37) wrong based on 41 sessions

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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, 02:02, edited 1 time in total.
Renamed and edited the question.

Kudos [?]: 7 [0], given: 3

Intern
Joined: 26 Aug 2012
Posts: 8

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

Re: Easiest and Quickest way to solve this ? [#permalink]

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01 Sep 2012, 22:48
m = 9 ^ (X-1)
m = 3 ^ (2x-2)
m^2 = 3 ^ (4x-4)
9m^2 = 3 ^ (4x-2)

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

Re: Easiest and Quickest way to solve this ?   [#permalink] 01 Sep 2012, 22:48
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