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Given that a and b are real numbers, let f (a, b) = ab and let g(a) =

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Math Expert
Joined: 02 Sep 2009
Posts: 42323

Kudos [?]: 133100 [0], given: 12408

Given that a and b are real numbers, let f (a, b) = ab and let g(a) = [#permalink]

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29 Oct 2017, 01:18
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Difficulty:

15% (low)

Question Stats:

98% (00:41) correct 2% (00:32) wrong based on 42 sessions

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Given that a and b are real numbers, let f(a, b) = ab and let g(a) = a^2 + 2. Then f[3, g(3)] =

(A) 3a^2 + 2
(B) 3a^2 + 6
(C) 27
(D) 29
(E) 33
[Reveal] Spoiler: OA

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Kudos [?]: 133100 [0], given: 12408

Director
Joined: 25 Feb 2013
Posts: 567

Kudos [?]: 257 [0], given: 35

Location: India
Schools: Mannheim"19 (S)
GPA: 3.82
Re: Given that a and b are real numbers, let f (a, b) = ab and let g(a) = [#permalink]

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29 Oct 2017, 11:42
Bunuel wrote:
Given that a and b are real numbers, let f(a, b) = ab and let g(a) = a^2 + 2. Then f[3, g(3)] =

(A) 3a^2 + 2
(B) 3a^2 + 6
(C) 27
(D) 29
(E) 33

$$g(3)=3^2+2=11$$

so $$f(3,11)=3*11=33$$

Option E

Kudos [?]: 257 [0], given: 35

Re: Given that a and b are real numbers, let f (a, b) = ab and let g(a) =   [#permalink] 29 Oct 2017, 11:42
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Given that a and b are real numbers, let f (a, b) = ab and let g(a) =

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