1.   Find the solution of 72 + z = 84 if the value of z can be selected from the set {4, 8, 12, 16}.
    A. 12 B. 16
    C. 8 D. 4
    Hint

  2.   Solve 3x = 18.
    A. 6 B. 21
    C. 7 D. 15
    Hint

  3.   Solve 5 + y = 11.
    A. 16 B. 2
    C. 7 D. 6
    Hint

  4.   Solve
    A. 4 B. 16
    C. 3 D. 24
    Hint

  5.   On a full flight from San Antonio to Los Angeles 28 people sat in first class. If 130 were on the flight, how many people sat in coach?
    A. 102 B. 158
    C. 112 D. 108
    Hint



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