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# If 5^x 5^x - 3 = (125)(5^y), what is y in terms of x? A. x

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Manager
Joined: 08 Oct 2005
Posts: 95
If 5^x 5^x - 3 = (125)(5^y), what is y in terms of x? A. x [#permalink]

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05 Aug 2006, 08:17
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If 5^x â€“ 5^x - 3 = (125)(5^y), what is y in terms of x?

A. x
B.x - 6
C.x - 3
D.2x + 3
E.2x + 6
Senior Manager
Joined: 22 May 2006
Posts: 368
Location: Rancho Palos Verdes
Re: what is y in terms of x? [#permalink]

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05 Aug 2006, 11:20
ong wrote:
If 5^x â€“ 5^x - 3 = (125)(5^y), what is y in terms of x?

A. x
B.x - 6
C.x - 3
D.2x + 3
E.2x + 6

Question is not correct..
-3 = 5^(y+3) ...........
I think it should be
5^x * 5^(x - 3) = (125)(5^y)
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Manager
Joined: 08 Oct 2005
Posts: 95
Re: what is y in terms of x? [#permalink]

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05 Aug 2006, 21:09
freetheking wrote:
ong wrote:
If 5^x â€“ 5^x - 3 = (125)(5^y), what is y in terms of x?

A. x
B.x - 6
C.x - 3
D.2x + 3
E.2x + 6

Question is not correct..
-3 = 5^(y+3) ...........
I think it should be
5^x * 5^(x - 3) = (125)(5^y)

Manager
Joined: 26 Jun 2006
Posts: 152

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05 Aug 2006, 21:59
I am getting y=2x-6, but it is not among the answers?
Manager
Joined: 08 Oct 2005
Posts: 95

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06 Aug 2006, 12:45
the choice is correct!!!!
06 Aug 2006, 12:45
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