Answer:
A possible number line is shown below. 
Step-by-step explanation:
I-----------------I----------------I
0                  1/3                1
 
        
                    
             
        
        
        
I'm not sure what you are trying to convey, but you cannot have more than one digit, so this is imposible
        
                    
             
        
        
        
25 to 75 in lowest terms:
25:75 = 1:3
        
             
        
        
        
Answer:
   D)  1,036,800 boxes
Step-by-step explanation:
The volume of a box is ...
   (20 in)(18 in)(15 in) = 5400 in^3
The volume of the storage space is ...
   (300 ft)(240 ft)(45 ft) = 3,240,000 ft^3
Then the number of boxes that will fit in the storage space is ...
   (3240000 ft^3)(1728 in^3/ft^3)/(5400 in^3/box) = 1,036,800 boxes