1.	Write as the sum of unit vectors for A(4, 8, -6) and B(-2, 5, 0).
		A.		B.
		C.		D.
		Hint
	2.	Find the magnitude of the vector from the origin to point P(7, -5, 23).
		A.		B.	5
		C.		D.
		Hint
	3.	Write as the sum of unit vectors for U(4, 3, -8) and V(-5, -4, -2).
		A.		B.
		C.		D.
		Hint
	4.	Find the ordered triple that represents the vector from S(9, -2, -11) to T(2, 2, 4).
		A.		B.
		C.		D.
		Hint
	5.	If is the vector from the origin to point P(4, 5, 1), and is the vector from the origin to point Q(-2, -9, 0), what is the ordered triple that represents ?
		A.		B.
		C.		D.
		Hint