Blue Book math problem

Test Preparation SAT Preparation
1

<p>I can't figure out the problem on page 860, #20 </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>They say the answer is E</p>

2

<p>Think about it... K has to be greater than 0</p>

<p>start plugging in answers
plug in k = 2
A. is gone
B. you get 7 so thats gone
C. You get 8 so its gone
D. You get 9 so its gone
E. The only one left.</p>

3

<p>thank you for the help</p>