Answer: 
Step-by-step explanation:
We have the equation  where P represents the payment and w represents the amount of water used.
 where P represents the payment and w represents the amount of water used.
To calculate the monthly payment that corresponds to 12 units of water you must do  in the main equation and solve for the variable P.
 in the main equation and solve for the variable P.




 
        
             
        
        
        
Answer:
Tax is 9.76 total cost is 131.74
Step-by-step explanation:
40.66 x 3= 121.98
121.98 x .08= 9.76
121.98+9.76= 131.74
 
        
                    
             
        
        
        
Is it a multiple choice question?
        
             
        
        
        
That's two half lives. 5/8 * 2 * 2 = 20/8 = 5/2 pounds7/8 * 2 * 2 = 28/8 = 7/2 pounds