Answer: 
Step-by-step explanation:
Given, the length of the rectangular dog run is 18 feet.
Formula: Perimeter = 2 ( length + width)
Let width be x.
Then, Perimeter = 2 (18 + x ) feet
The perimeter of the dog run must be at least 42 feet and no more than 72 feet. 
That is   

Divide inequality by 2, we get

Subtract 18 from each side, we get

 Required inequality : 
 
        
             
        
        
        
Answer:
one 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The y-axis. 
Step-by-step explanation:
 
        
                    
             
        
        
        
Andrea can cut 4 1/2 (or 4.5) inch pieces from her original piece. 
18/4 = 4.5
Hope this helps!
        
             
        
        
        
Answer: the number of the parking space covered by the car is 87
Step-by-step explanation:
Numbers are assigned to each parking spot. Looking closely at the numbers assigned to each spot, the numbers are inverted and the number on each successive spot differ by one. The numbers are 86, 87, 88, 89, 90, 91
Therefore, the number assigned to the spot where the car would be 87