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If \(x>0\) and \(x^2=161,\) what is the best whole number approximation of \(x?\)
(A) 13
(B) 18
(C) 41
(D) 80
(E) 2,560
[spoiler]OA=A[/spoiler]
Source: Official Guide
(A) 13
(B) 18
(C) 41
(D) 80
(E) 2,560
[spoiler]OA=A[/spoiler]
Source: Official Guide
