Answer: Put a cardboard piece inside the envelope then mail it 
Step-by-step explanation: If you make the cardboard piece the exact size as the pictures then put it behind all of the pictures it would make it hard for the pictures to bend if it has support. 
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
3
Step-by-step explanation:
I say it is 3 because 2 * 3 = 6 
6/2=3
I hope this helps you:) 
 
        
             
        
        
        
Answer: 84 cubic cm
Step-by-step explanation: You just do 14 times 2 and the answer times 3 which is 84 cubic cm.
 
        
                    
             
        
        
        
<span>Let x = amt of water evaporated :.05(50) = .08(50-x) 2.5 = 4 - .08x .08x = 4 - 2.5 .08x = 1.5 x = 18.75 lb of water evaporated : ; Check; amt of salt remains the same, only the percentage is different, right? .05(50) = .08(50-18.75) .05(50) = .08(31.25) 2.5 = 2.5</span>