If |-x/3 + 1| < 2, which of the following must be true?

Correct answer marked below

x > 0

x < 8

x > -4

Correct

0 < x < 3

None of the above

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What this question tests

Your ability to solve absolute-value equations and inequalities by considering both cases.

Dropping the absolute value bars entirely or missing that |x| = k has two solutions when k > 0.