Answer: A
If its around the line and the dots are going the same way than its accurate.
        
                    
             
        
        
        
Answer: The answer is 3n + 2
Step-by-step explanation: You will have to combine like terms:
=−n + −4 + 4n + 6
=(−n + 4n) + (−4 + 6)
=3n + 2
 
        
             
        
        
        
Answer:
0
Step-by-step explanation:
The smallest perfect cube would be 0 since it cannot be negative and zero raised to the third power would still be 0
 
        
                    
             
        
        
        
 (a) The team captain wants to know what his teammates eats before a match
Team captain know by taking a survey of teammates
(b) The team captain wants to know who can score most goals against the best player
This can be known by observation of games. so its observational study
(c) The team captain wants to know how praising the affects the teammates performance.
This can be known by experiment 
(d) The team captain wants to know what other sports teammates play
This can be known by observation of games. so its observational study