Whenever you see the word "per" you can ALWAYS substitue in the word "divide".  When you see "miles per gallon", change "per" into "divided by" to get miles divided by gallons.  That is how you will solve the problem.
SO.....
300 miles ÷ 10 gallons = 30 miles per gallon
        
                    
             
        
        
        
B is the answer on ingenuity
        
             
        
        
        
Answer: f^-1(4)= 2 f^-1(-5)= -4 f^-1(0)= 0
Step-by-step explanation:
 
        
             
        
        
        
1 and they split the other in half