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If a=2, b=-2, and c=3, what is the value of a^4b^-3c^0?

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If a=2, b=-2, and c=3, what is the value of a^4b^-3c^0?  [#permalink]

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New post 01 Aug 2018, 02:09
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

80% (00:32) correct 20% (00:40) wrong based on 44 sessions

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[Math Revolution GMAT math practice question]

If \(a=2\), \(b=-2\), and \(c=3\), what is the value of \(a^4b^{-3}c^0\)?

A. -2
B. -1
C. 0
D. 2
E. 3

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If a=2, b=-2, and c=3, what is the value of a^4b^-3c^0?  [#permalink]

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New post 01 Aug 2018, 04:53
\(2^4\) = 16

\(-2^-^3\) = -\(\frac{1}{8}\)

\(3^0\) = 1

16 * -\(\frac{1}{8}\) * 1 = -2


Option A
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Re: If a=2, b=-2, and c=3, what is the value of a^4b^-3c^0?  [#permalink]

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New post 03 Aug 2018, 02:08
=>

\(a^4b^{-3}c^0\)
\(= 2^4*(-2)^{-3}*3^0\)
\(= -(2^4*2^{-3}*1)\)
\(= -2\)

Therefore, the answer is A.

Answer: A
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Re: If a=2, b=-2, and c=3, what is the value of a^4b^-3c^0? &nbs [#permalink] 03 Aug 2018, 02:08
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