1.   Simplify (7a4b) (8a7b6).
    A. 15a11b7 B. 56a11b7
    C. 56a28b6 D. 15a28b6
    Hint

  2.   Simplify Assume the denominator is not equal to zero.
    A. B.
    C. D.
    Hint

  3.   Evaluate . Express the result in scientific notation.
    A. 8.0 × 10-9 B. 80 × 10-8
    C. 8.0 × 10-7 D. 0.8 × 10-8
    Hint

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

  5.   Which equation represents exponential decay?
    A. y = 1.05(0.95)x B. y = 0.86(1.46)x
    C. y = 2.62(1.22)x D. y = 1.7(1.06)x
    Hint

  6.   Simplify
    A. B.
    C. D.
    Hint

  7.   Which equation represents exponential growth?
    A. y = 6.38(1)x B. y = 9(0.5)x
    C. y = 2.03(5)x D. y = 3.96(0.65)x
    Hint

  8.   Which expression increases most quickly?
    A. x + 2 B. 2x
    C. 2x D. x2
    Hint

  9.   Which is the graph of y = 0.5x?
    A. B.
    C. D.
    Hint

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