If f is a function defined for all k by f(k) = k^(2/3)/16, what is f(8 k) in terms of f(k)?	Pick one
A) 1/8 f(k)  B) 5/8 f(k)  C) 4 f(k)  D) 10 f(k)  E) 32 f(k)
f(k) = (k^(2/3)) /16   f(8 k) = (8 k)^( 2/3)/16 = 4 k^(2/3)/16 = 4 * (k^(2/3)/16) =4 f(k).   So answer is 4 f(k).
<result>C</result>
If f is a function defined for all k by f(k) = k^(2/3)/16, what is f(8 k) in terms of f(k)?