And what exactly is the problem??
Hey there!!
Given :-
... 4a - 8b
<em>a is given by 11 and b is given by 5 </em>
Plugging in the values :-
... 4 ( 11 ) - 8 ( 5 )
... 44 - 40
... 4
Hence, the answer is 4.
Hope it helps!
I believe that the answer is C.