If f is a function defined for all k by f(k) = k^(2/3)/16, what is f(64 k) in terms of f(k)?
Choose the correct choice
A) 1/8 f(k)	B) 5/8 f(k)	C) 2 f(k)	D) 16 f(k)	E) 32 f(k)
f(k) = k^(2/3)/16   f(64 k) = (64k)^(2/3)/16 = 16 * k^(2/3)/16 = 16 * (k^(2/3)/16) = 16 f(k).   So answer is 16 f(k).
<result>D</result>
If f is a function defined for all k by f(k) = k^(2/3)/16, what is f(64 k) in terms of f(k)?