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This is one of those questions that require us to check/test the answer choices. In these situations, always check the answer choices from E to A, because the correct answer is typically closer to the bottom than to the top. For more on this strategy, see my article: https://www.beatthegmat.com/mba/2014/09/ ... -questionsWhich inequality solution set, when graphed on the number line, is a single line segment of finite length?
A) x� ≥ 1
B) x³ ≤ 27
C) x² ≥ 16
D) 2 ≤ |x| ≤ 5
E) 2 ≤ 3x + 4 ≤ 6
Brent..Is D incorrect because we get two separate line segments with the absolute value of X while the prompt asks for a single line segment?Brent@GMATPrepNow wrote:This is one of those questions that require us to check/test the answer choices. In these situations, always check the answer choices from E to A, because the correct answer is typically closer to the bottom than to the top. For more on this strategy, see my article: https://www.beatthegmat.com/mba/2014/09/ ... -questionsWhich inequality solution set, when graphed on the number line, is a single line segment of finite length?
A) x� ≥ 1
B) x³ ≤ 27
C) x² ≥ 16
D) 2 ≤ |x| ≤ 5
E) 2 ≤ 3x + 4 ≤ 6
E) 2 ≤ 3x + 4 ≤ 6
Subtract 4 from all sides to get: -2 ≤ 3x ≤ 2
Divide all sides by 3 to get: -2/3 ≤ x ≤ 2/3
So, x can have any value from -2/3 to 2/3
So, if we were to graph the possible values of x, the line segment would have a FINITE length.
Answer: E
Cheers,
Brent
Yes, exactly.manik11 wrote: Brent..Is D incorrect because we get two separate line segments with the absolute value of X while the prompt asks for a single line segment?
Thanks!
