Answer:Answer:a) Area=f(x)= 24x-x^2
b) f(x) ranges from 0 to 144
c) Area max = 144 ft^2
Step-by-step explanation: shown in the attachment
 
        
             
        
        
        
Answer:
The answer is d 
Step-by-step explanation:
this is because a , b and c all have multiple x vales with more then one y value . 
 
        
             
        
        
        
The answer will be A-1188 in²
 
        
                    
             
        
        
        
4d + 12 = 4(d + 3)
Basically, you just need to determine what 4d and 12 have in common.  In this case, they both divide evenly by 4. Therefore 4 (d + 3) = 4d + 12 according to the distributive property.