What is the smallest integer k for which 64^k > 4^20? Choose the correct option
A) 4	B) 5	C) 6	D) 7	E) 8
64^k &gt; 4^20   4^(3k) &gt; 4^20   3k &gt; 20   k = 7   The answer is 7.
<result>D</result>
What is the smallest integer k for which 64^k > 4^20?