1.   Find the greatest common factor of 168 and 288.
    A. 36 B. 24
    C. 48 D. 2
    Hint
  2.   What is the greatest common factor of 45, 75, and 135?
    A. 9 B. 25
    C. 5 D. 15
    Hint
  3.   Find the GCF of 3x2y2 and 15xy.
    A. 3x2y B. 3x2y2
    C. 3xy2 D. 3xy
    Hint
  4.   Find the GCF of 17r4s4 and 23rs4.
    A. 17rs4 B. rs4
    C. r4s4 D. rs
    Hint
  5.   The area of a rectangle can be written by the expression 24x4+ 18x3. Find a set of possible dimensions for this rectangle.
    A. 6x3 by 4x + 3
    B. 24x3 by x + 18
    C. 2x4by 12 + 9x
    D. 3 by 8x3 + 6x3
    Hint

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