1.   Express 0.091 in scientific notation.
    A. 9.1 × 10-2 B. 9.1 × 101
    C. 9.1 × 10-1 D. 9.1 × 102
    Hint

  2.   What is the degree of 42x5y2z?
    A. 8 B. 5
    C. 2 D. 7
    Hint

  3.   Simplify (18q3r)(2qr4).
    A. 36qr B. 36q3r4
    C. 36q4r5 D. 36q3r5
    Hint

  4.   Simplify (-3a5b3)4.
    A. -12a9b7 B. 81a20b12
    C. -12a20b12 D. -81a9b12
    Hint

  5.   Express the result in scientific notation.
    A. 1.25 × 10-10 B. 1.25 × 104
    C. 1.25 × 10-4 D. 1.25 × 1010
    Hint



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