If c > 1 and d = 2^(c −1), then 4^c =
Choose the correct choice from the following choices
A) 16d^2 B) 4d^2 C) d^2 D) d^2/4 E) d^2/16
If c &gt; 1 and d = 2^(c −1), then 4^c   Given c&gt;1, so let's assume c=2   d=2^(c-1) = 2^(2-1) = 2, so d=2   hence, 4^c = 4^2 = 16   only 1 ans. choice can satisfy this:   A) 16d^2 --&gt; clearly &gt; 16   B) 4d^2 --&gt; 4*2^2 = 16(we can stop after this as there can be only 1 right answer)   C) d^2 --&gt; clearly &lt; 16   D) d^2/4 --&gt; clearly &lt; 16   E) d^2/16 --&gt; clearly &lt; 16   Ans. 4d^2) 4d^2
<result>B</result>
If c > 1 and d = 2^(c −1), then 4^c =