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

  2.   Evaluate 5k + if
k = 3, m = 20, and n. = 5.
    A. 19 B. 57
    C. 20 D. 7
    Hint

  3.   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. 40 B. 5
    C. 10 D. 20
    Hint

  4.   Evaluate y3 if y = 4.
    A. 64 B. 16
    C. 43 D. 12
    Hint

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



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