1st one is 512L
2nd one is 125mL 
let me know if im wrong
        
                    
             
        
        
        
The answer is for x is x = 60
        
                    
             
        
        
        
Answer:
Just factorize the given plynomials.
Step-by-step explanation:
like in first example 7x+49
7(x+7)
 
        
                    
             
        
        
        
Answer:
3
Step-by-step explanation:
Parenthesis
Exponents
Multiplication 
Division 
Addition 
Subtraction 
3^4 +9^2÷3^3-9^2
81+81÷27-81
81+3-81
3
 
        
             
        
        
        
Answer:
13²+4−1
Step-by-step explanation:
<em><u>hope it helps</u></em>