1.   The set of whole numbers and their opposites are known as ______.
    A. absolute values B. positive numbers
    C. integers D. negative numbers
    Hint

  2.   How can you represent writing a check for $10 as an integer?
    A. |+10| B. -10
    C. |-10| D. +10
    Hint

  3.   Which graph shows the graph of the numbers {-4, -1, 2, 3}?
    A.
    B.
    C.
    D.
    Hint

  4.   Evaluate the expression |a| - 7 if a = -23.
    A. -16 B. 30
    C. -30 D. 16
    Hint

  5.   Evaluate the expression 2|x| - 3|y| if x = -8 and y = -5.
    A. 31 B. -31
    C. -1 D. 1
    Hint