I am sure u have to separate the number with their variables so (4x) (2y -y ) (40+10) 
Remember that you have to remove the brackets and u should have 4x - 1y + 50 then 4\4 and 50/4 = four cancles out 4 so we have 1y + 12.5 divide each by one one cancles out 1 = 12.5 round it up to 13 but I suggest u check this with anyone else you can but if my math is correct it should be the closest answer
        
             
        
        
        
THE CORRECT ANSWER IS C)-3
        
             
        
        
        
Answer:
The y-intercept is 4
Step-by-step explanation:
You find the y-intercept by finding where x is zero. In the table, when x=0 the y=4. The y-intercept is 4. The graph of the function crosses the x-axis at the point (0,4).
 
        
                    
             
        
        
        
Ac is 20cm and an is 5 cm u jus have to add them together