Answer: A
Explanation: the two triangles are proportional, so find the “proportion” between the two sides 
12/4=3
3*3=9
3z=6
        
             
        
        
        
Answer:
do the possible math functions first like 3 x 2 and 6 + 96 
 
        
             
        
        
        
40/60= 0.67 (i.e. 2/3)= about 66.67%
        
                    
             
        
        
        
Answer: It's not a polynomial
It's not a polynomial because the exponent of -1 in the second term. The exponents for any polynomial must be nonnegative whole numbers {0,1,2,3,...}