Answer:
d = (sn - 3)/9
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 18
Step-by-step explanation:
put each number in place of x and finish the equation. you will find that 5, 12, and 15 don’t work because they just simply don’t add up. 
finally, put 18 in place of x. 
18 + (18 - 10) = 26
18 + 8 = 26
26 = 26 ✔️
 
        
             
        
        
        
Answer: A,D
Step-by-step explanation: I think that it is right?
 
        
             
        
        
        
Answer:
x-3 < 9
Step-by-step explanation:
if we know that the liters of milk are 3 or more and less than 9, we have
3=< x <9  
where x are the liters of milk.
if we subtract 3 in inequality,
x-3 < 6  with x greater than or equal to 0 because we are talking about a quantity
to solve this inequality, we have to clear x
x < 6+3 = 9 So        x < 9  where x belongs to natural numbers