1.   Express 7-3 using positive exponents.
    A. B.
    C. (-7)3 D.
    Hint
  2.   Evaluate the expression 5n4m-2 if m = 6 and n = 3.
    A. -20 B.
    C. -5 D.
    Hint
  3.   Write 0.478 in scientific notation.
    A. 478 × 101
    B. 4.78 × 10-1
    C. 4.78 × 102
    D. 4.78 × 10-2
    Hint
  4.   How would 9.3 × 10-7 be written in standard form?
    A. 0.000000093
    B. 93,000,000
    C. 0.00000093
    D. 930,000,000
    Hint
  5.   Simplify (3x3)4.
    A. 12x12 B. 3x7
    C. 27x7 D. 81x12
    Hint

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