C^2-64 is a square roots factoring one. you take the square root of c^2 which is c and then the square root of 64 which is 8 or -8 so the answer is (c-8)(c+8). and it is a special product
        
             
        
        
        
11 5/6 as a decimal would be 11.83. Then, rounding that to the nearest whole number would be 12. Giving you an answer of 12.
        
             
        
        
        
ANSWER
B. The graph is symmetric about the origin
EXPLANATION.
The given function is 

When a=1,

Let, 


Since n is odd,


This implies that, the function 

is symmetric with respect to origin.
The correct answer is B