Step-by-step explanation:
It is given that,
Sam opened a savings account with a deposit of $50. Every month after that, he  deposited $20 more.
It is not a proportional relationship. As initial amount was $50 and every month he deposited $20 more. The ratio is not constant for the deposited amounts. 
To make the relationship proportional, he must start with zero balance and then should have deposited $20 every month.
 
        
             
        
        
        
Answer:
The equation you would use is лr² (pi times radius squared).
The area of the stage would be 1963.5 square meters or 625л square meters
 
        
             
        
        
        
Answer:
49
Step-by-step explanation:
25b² + 70b + .... 
( 5b + 7)² = 5×5b² + 2×5×7b + 7×7 = 25b² + 70b + 49
 
        
             
        
        
        
20% of 1000 = 200
40% of 200 = 80
Therefore there are 80 red sneakers
Hope this helps :)
 
        
                    
             
        
        
        
Answer:
I need help on this thing too someone help
Step-by-step explanation: