1.   What is the constant rate of change between the quantities in the table?
   
    A. 2 gal per minute B. -20 gal per minute
    C. -10 gal per minute D. -2 gal per minute
    Hint

  2.   What is the constant rate of change between the quantities in the table?
   
    A. 4 legs per dog B. 2 legs per dog
    C. 40 legs per dog D. 4 dogs per leg
    Hint

  3.   What is the constant rate of change between the quantities in the table?
   
    A. 5 burgers per person B. 20 burgers per person
    C. 2 burgers per person D. 10 burgers per person
    Hint

  4.   What is the constant rate of change shown in the graph?
   
    A. 130 mph B. 70 mph
    C. 65 mph D. 55 mph
    Hint

  5.   What is the constant rate of change shown in the graph?
   
    A. 1 lb per person B. 0 lbs per person
    C. 0.5 lb per person D. 2 lbs per person
    Hint