1.   Let . Find .
    A. B.
    C. D.
    Hint

  2.   Write as a sum of unit vectors for A(3, -1) and B(8, 6).
    A. B.
    C. D.
    Hint

  3.   Find the magnitude of the vector .
    A. B.
    C. D.
    Hint

  4.   A vector that is represented by an ordered pair can ________ be written as the sum of unit vectors.
    A. always B. never
    C. sometimes D. usually
    Hint

  5.   Let C = (4, 17), D. = (-11, 2). Write as a sum of unit vectors.
    A. B.
    C. D.
    Hint