Domain are x values (independent variable);
Speed would be independent so what speeds can be used ? -30 mph, 30 mph, 1000 mph?
Can a car go 0 mph?
What is realistic?
I would say 0 greater or equal to x greater than whatever you think is beyond the max that a car can go.
        
                    
             
        
        
        
Integers are whole numbers, both positive and negative. Therefore, all of the positive and negative whole numbers between these two numbers in a set will be your answer:

Hope this helped, and have a nice day!
 
        
        
        
Answer: Use M A T H W A Y
 
        
                    
             
        
        
        
The resulting number would be 120