1.   Evaluate 3x + 2y if x = 3 and y = 7.
    A. 5 B. 27
    C. 105 D. 23
    Hint

  2.   Evaluate if a = 9, b = 6 and c = 3.
    A. 11 B. 15
    C. 5 D. 9
    Hint

  3.   Evaluate 7 × (a - 4) if a = 9.
    A. 63 B. 35
    C. 59 D. 28
    Hint

  4.   Evaluate ab + 8 if a = 4 and b = 7
    A. 28 B. 55
    C. 36 D. 60
    Hint

  5.   In physics, the number measures the force of gravity between two objects when a and b each stand for the mass one of the objects and d stands for the distance between them. Find the force of gravity when a = 5, b = 8, and d = 2.
    A. 10 B. 20
    C. 40 D. 5
    Hint



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