Answer:
D.
Step-by-step explanation:
It just is hard to explain but I had the same question.
 
        
                    
             
        
        
        
The empty jug weighs 0.75 lb
With the 3c, the total weighs 2.25 lb. That means:
3c + empty jug = 3c + 0.75 = 2.25
3c = 2.25 - 0.75
3c = 1.5
 and 1c = 0.5 (so c is a constant -or the slope-)
Then the equation is:
y = 0.5x + 0.75
        
             
        
        
        
Answer:
lin 
Step-by-step explanation:
 
        
             
        
        
        
12. 

13. 

16. 

 is already in simplest form. 
 
        
        
        
The first expression can be simplified by combining like terms.
First, the terms "4b" and "-3b" can be combined to form "b"
Then, the terms "-7" and "9" can be combined to form "2"
Finally, we simply put these two final terms together, to form "b+2"
Hence, 4b-7-3b+9 is equal to be + 2.
Hope this helps!