1.   The number e is _____.
    A. rational and approximately 3.142
    B. rational and approximately 2.718
    C. irrational and approximately 3.142
    D. irrational and approximately 2.718
    Hint

  2.   Find the balance after 40 years of a $15,000 investment earning 9% interest compounded continuously.
    A. $567,451.29 B. $548,973.52
    C. $541,649.63 D. $541,736.11
    Hint

  3.   The range of the function f(x) = ex - 2 is _______.
    A. all real numbers < -2 B. all real numbers > 0
    C. all real numbers < 0 D. all real numbers > -2
    Hint

  4.   Which equation is represented by the graph?
   
    A. y = 2ex B. y = -2ex
    C. y = 2e D. y = -2e-x
    Hint

  5.   Find the balance of a $500 investment after 18 years earning 7.9% interest compounded continuously.
    A. $2,072.70 B. $541.10
    C. $502.20 D. $2,146.32
    Hint