Answer:
The third one. The square in the top left can only fold to the right or down.... which means there is guaranteed to be an open side remaining on the square.
 
        
                    
             
        
        
        
3x=2
x= 2/3
slope is undefined. there is no y intercept
        
             
        
        
        
-24°F
Step-by-step explanation:
-18°F + 13°F - 19°F
= -5°F - 19°F
= -24°F
 
        
                    
             
        
        
        
-4 
Both of those angles should be measured 112 degrees so -4+116=112