Answer:
21 chickens
Step-by-step explanation:
10×4=40
82-40=42
42÷2=21 
 
        
             
        
        
        
Prism volume = lbh
= 10*8*12
= 960cm^3
Note: I'm assuming the hole was cut right through it...
Hole volume = lbh
= 2*3*12
= 72cm^3
Final volume = 960 - 72 = 888cm^3
        
             
        
        
        
Convert to vertex form:-
y = 5(x^2 - 2x) + 1
y = 5[(x - 1)^2 - 1] + 1
y = 5(x - 1)^2  - 4
vertex is (1, -4)
        
             
        
        
        
Answer:
Infinite because it keeps going