Question

Help!!!
Evaluate this piecewise function at x=12 and x = 49.

Answer 1

Answer: Letter B.

Explanation:

For f(1/2), f(x) = 1/x, if so; is the inverse of the inverse of 2, that is 1/1/2 = 2. As for f(49), f(x) = sqrt(x), and so f(49) = 7, leaving only letter B.