…….……………._.……………………ummmmmmmm…
        
             
        
        
        
Step-by-step explanation:
The answer is 
If naya is 4 years old then 3 times Adam age is 12 
After 4 years naya is 8 years old and Adam is 16 
We can check it because twice of 8 is 16
So now Adam is 12 years and Naya is 4 years old
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
When the function is less than but equal to and it's opposite are always solid dots. By this you can do simple process of elimination.
 
        
             
        
        
        
Answer: 2nd graph and the point is (6,7) 
Step-by-step explanation: