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ecastrillon7
- Newbie | Next Rank: 10 Posts
- Posts: 2
- Joined: Thu Dec 10, 2015 6:10 pm
Statement 1: 3|x² - 4| = y - 2.What is the value of y?
(1) 3|x² - 4| = y - 2
(2) |3 - y| = 11
If x=0, then y=14.
If x=2, then y=2.
Since y can be different values, insufficient.
Statement 2: |3 - y| = 11.
Solving 3-y = 11 and 3-y = -11, we get:
y = -8 or y=14.
Since both y = -8 and y=14 are possible, insufficient.
Statements 1 and 2 combined:
Statement 2 requires that y = -8 or y=14.
Plugging y = -8 into 3|x² - 4| = y - 2, we get:
3|x² - 4| = -8-2
3|x² - 4| = -10
Not possible, since the left side cannot yield a negative result.
Thus, y=14.
Sufficient.
The correct answer is C.
