1.   Which is the graph of y = 2.5x?
    A. B.
    C. D.
    Hint

  2.   Which situation describes the expression 2?
    A. a coin collection where 2 coins are added each month
    B. areas of various rugs with side length t for the rug at stage t
    C. the population of a city that doubles every 10 years
    D. the air temperature when a cold front moves into the area and the temperature falls 2?every half hour
    Hint

  3.   Which table describes exponential growth?
    A. B.
    C. D.
    Hint

  4.   What is the value of 5x when x = 5?
    A. 25 B. 3125
    C. 5 D. 10
    Hint

  5.   Which table describes exponential decay?
    A.
    B.
    C.
    D.
    Hint



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