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

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

  3.   What is the constant rate of change between the quantities in the table?
   
    A. 5 burgers per person B. 10 burgers per person
    C. 2 burgers per person D. 20 burgers per person
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  4.   What is the constant rate of change shown in the graph?
   
    A. 3 B. 4
    C. 6 D. 5
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  5.   What is the constant rate of change shown in the graph?
   
    A. 1 lb per person B. 0.5 lb per person
    C. 0 lbs per person D. 2 lbs per person
    Hint