1.	Which element is in row 3, column 1?
		A.	6	B.	9
		C.	4	D.	-1
		Hint
	2.	Choose the matrix that represents the ordered triple (5, -7, 1).
		A.		B.
		C.	[1 -7 5]	D.	[5 -7 1]
		Hint
	3.	Solve .
		A.	(2, 8)	B.	(-2, -8)
		C.		D.
		Hint
	4.	The matrix is an example of which of the following matrices?
		A.	all of the above	B.	square matrix
		C.	column matrix	D.	row matrix
		Hint
	5.	Solve
		A.	(1, –2)	B.	(–1, 2)
		C.	(2, –1)	D.	(–2, 1)
		Hint