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What is the value of x^3?

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Source: — Data Sufficiency |

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Re: What is the value of x^3?

by Jay@ManhattanReview » Tue Jan 21, 2020 9:22 pm
BTGmoderatorDC wrote: ↑
Tue Jan 21, 2020 5:34 pm
 What is the value of x^3?

(1) |x|=2
(2) 5x+6=16

OA B

Source: Veritas Prep
Let's take each statement one by one.

(1) |x| = 2

=> x = ±2 => x^3 = (±2)^3 = ±8. No unique answer. Insufficient.

(2) 5x + 6 = 16

=> x = 2 => x^3 = 2^3 = 8. Unique answer. Sufficient.

The correct answer: B

Hope this helps!

-Jay
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