Triangle = 3, Square = -1, Star = 5
        
             
        
        
        
Answer:
n=6
Step-by-step explanation:
(n-18)/3 = -4
multiply by 3
n-18 = -12
add 18
n = 6
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
The sum of adjacent angles traversed by a line must equal 180 degrees.
128+x=180
x=52
 
        
                    
             
        
        
        
Answer:
im not the best at this but i recommend: 
Step-by-step explanation:
i recommend a website like Math w*(A)y their good at questions like these