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If f(x, y) = x^2y and f(a, b) = 6, what is f(2a, 4b)?

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If f(x, y) = x^2y and f(a, b) = 6, what is f(2a, 4b)?  [#permalink]

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New post 17 Dec 2018, 01:59
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A
B
C
D
E

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  15% (low)

Question Stats:

88% (01:09) correct 13% (01:49) wrong based on 19 sessions

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Re: If f(x, y) = x^2y and f(a, b) = 6, what is f(2a, 4b)?  [#permalink]

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New post 17 Dec 2018, 02:10
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Bunuel wrote:
If \(f(x, y) = x^2y\) and \(f(a, b) = 6\), what is \(f(2a, 4b)\)?

A. 6
B. 16
C. 18
D. 36
E. 96


f(a,b)=a^2*b=6
f(2a,4b)=(2a)^2*4b=16*a^2*b=16*6=96.

IMO, option E.
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Re: If f(x, y) = x^2y and f(a, b) = 6, what is f(2a, 4b)?   [#permalink] 17 Dec 2018, 02:10
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If f(x, y) = x^2y and f(a, b) = 6, what is f(2a, 4b)?

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