Answer:
The answer is :60
Step-by-step explanation:
Hmmmm...... because
 
        
             
        
        
        
Answer:

Step-by-step explanation:
First, you have to substitute both functions into the equation to get:

Then, you distribute the negative sign in front of g(x) to get:

And finally, you add/subtract the x's that have the same power to get:

 
        
             
        
        
        

and surely you know how much that is.
 
        
             
        
        
        
Answer: the water increases by 2 every hour 
Step-by-step explanation: