If 0 < a < b and k = (2a + 9b)/b , which of the following must be true?	Choose the correct choice from the following options:
A) k < 2
B) k < 7
C) k < 9
D) k > 9
E) k > 11
Please follow posting guidelines (link in my signature) especially writing the correct topic title. Also do mention the source of the question if you select the tag:Source-Other Please Specify.   As for your question, it is very simple and straightforward with number plug in.   Assume a=1 and b=2 as a&lt;b, you get k = (2+14)/2 = 10. This eliminates all but option k &gt; 9 , making it the correct answer.
<result>D</result>
If 0 < a < b and k = (2a + 9b)/b , which of the following must be true?