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Difficulty—
For all numbers \(s\) and \(t,\) the operation \(*\) is defined by \(s*t = (s - 1)(t + 1).\) If \((-2)*x = -12,\) then \(x =\)
(A) 2
(B) 3
(C) 5
(D) 6
(E) 11
Answer: B
Source: Official Guide
(A) 2
(B) 3
(C) 5
(D) 6
(E) 11
Answer: B
Source: Official Guide
