Answer:
 cost per mile = $2.
Step-by-step explanation:
Given the cost function, c(m) = 2m + 4, 
Where the m represents the number of miles traveled, and $2 is the cost per mile of the cab. The $4 represents the flat rate, a set fee, or the initial value. 
Therefore, the cost per mile of the cab is $2.  
 
        
             
        
        
        
Answer:
y-4=(-1/2)(x-4)
Step-by-step explanation:
Slope=(8-4)/(-4-4)=-4/8=-1/2
The equation of the line is y-4=(-1/2)(x-4) 
 
        
                    
             
        
        
        
Answer:
d<-1.75
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Increase the area of the deck by 12 square feet.
Step-by-step explanation: