1.	Let and . Find .
		A.		B.
		C.		D.
		Hint
	2.	A vector that has a magnitude of one is called a _____.
		A.	resultant	B.	scalar
		C.	unit vector	D.	magnitude
		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.	usually	B.	sometimes
		C.	always	D.	never
		Hint
	5.	Let C = (4, 17), D. = (-11, 2). Write as a sum of unit vectors.
		A.		B.
		C.		D.
		Hint