<p>Can someone help me with this problem. </p>
<p>If k is a positive integer, which of the following must represent an even integer that is twice the value of an odd integer?</p>
<p>A. 2k
B. 2k+3
C. 2k+4
D. 4k+1
E. 4k+2</p>
<p>E. 4k+2 = 2(2k+1)</p>
<p>(2k+1) = always odd and since 2 is in front of that, it fits the question perfectly.</p>