1.   What is the constant rate of change between the quantities in the table?
   
    A. $5 per hour B. $1 per hour
    C. $10 per hour D. $40 per hour
    Hint

  2.   What is the constant rate of change shown in the graph?
   
    A. 3 B. 4
    C. 5 D. 6
    Hint

  3.   What is the constant rate of change shown in the graph?
   
    A. $16 per lawn B. $10 per lawn
    C. $20 per lawn D. $5 per lawn
    Hint

  4.   What is the constant rate of change shown in the graph?
   
    A. 1 lb per person B. 0 lbs per person
    C. 2 lbs per person D. 0.5 lb per person
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  5.   What is the constant rate of change shown in the graph?
   
    A. 15 feet per minute B. 150 feet per minute
    C. -15 feet per minute D. -150 feet per minute
    Hint