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

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

  3.   Evaluate x + 5y if x = 12 and y = 9.
    A. 57 B. 47
    C. 153 D. 71
    Hint

  4.   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. 40
    C. 20 D. 5
    Hint

  5.   Evaluate x2 + 2xy + y2 if = 4 and y = 7.
    A. 65 B. 121
    C. 86 D. 78
    Hint



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