Answer:
3
Step-by-step explanation:
2 + 2 = 4
4 - 1 = 3
 
        
                    
             
        
        
        
Answer:
18
Step-by-step explanation:
when there is a - in front of an expression in parentheses, change the sign of each term in the expression
6+14+(-2)
then calculate the sum or difference 
6+14-2= 18
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
 
        
             
        
        
        
Yes it would be a triangular prism