1.   What is the constant rate of change between the quantities in the table?
   
    A. $40 per hour B. $1 per hour
    C. $5 per hour D. $10 per hour
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  2.   What is the constant rate of change between the quantities in the table?
   
    A. -20 gal per minute B. 2 gal per minute
    C. -10 gal per minute D. -2 gal per minute
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  3.   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
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  4.   What is the constant rate of change between the quantities in the table?
   
    A. 20 burgers per person B. 10 burgers per person
    C. 2 burgers per person D. 5 burgers per person
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  5.   What is the constant rate of change shown in the graph?
   
    A. 0.5 lb per person B. 0 lbs per person
    C. 1 lb per person D. 2 lbs per person
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