Question #N634
If the function *f* is defined by *f*(x) = \sqrt{x} + 4, what is the value of *f*(16)?
A. 4
B. 8
C. 12
D. 20
Correct Answer is: C
To find *f*(16), we substitute 16 for *x* in the function: *f*(16) = \sqrt{16} + 4. Since \sqrt{16} = 4, *f*(16) = 4 + 4 = 8.