1.	Use Cramer's rule to find the value of n in the system of equations.
		A.	-22	B.
		C.		D.
		Hint
	2.	Solve [3x 8y] = [-12 1] for x and y.
		A.	x = -12 y = 1
		B.	x = -4 y =
		C.	x = 4 y = 1
		D.	x = -4 y = 8
		Hint
	3.	Solve .
		A.	(-2, -8)	B.
		C.		D.	(2, 8)
		Hint
	4.	Find
		A.		B.
		C.		D.
		Hint
	5.	Find C + D if C = [14 8 -1] and D = [-10 8 15].
		A.	[4 16 14]	B.	[24 0 -16]
		C.	[24 16 14]	D.	[4 0 -16]
		Hint
	6.	Triangle PQR with vertices P(-8, 9), Q(-3, -1), and R(2, 5) is translated so that P' is at (-12, 0). Find the translation matrix.
		A.		B.
		C.		D.
		Hint
	7.	Which product is not defined?
		A.	[11 4 -3]
		B.	[16 12 5]
		C.
		D.
		Hint
	8.	The product gives the coordinates of two points on line AB that has been rotated 90° counterclockwise about the origin. Name the coordinates of A' and B'.
		A.	A'(-1, 1), B'(1, -3)
		B.	A'(1, 1), B'(-1, -3)
		C.	A'(1, -3), B'(1, 1)
		D.	A'(-1, -3), B'(1, 1)
		Hint
	9.	Evaluate using expansion by minors.
		A.	68	B.	14
		C.	80	D.	64
		Hint
	10.	Find the inverse of
		A.		B.
		C.		D.
		Hint
	11.	Solve using inverse matrices.
		A.	(4, -4)	B.	(-4, 4)
		C.	(-4, 0)	D.	(4, 4)
		Hint
	12.	Find the product of
		A.
		B.
		C.
		D.
		Hint
	13.	Evaluate
		A.	–38	B.	38
		C.	128	D.	–128
		Hint
	14.	Two sides of an angle are contained in lines whose equations are 6x + 4y = 15 and 7x – 9y = 3. Find the coordinates of the vertex of the angle. Round to the nearest hundredth.
		A.	(1.79, 1.06)	B.	(–1.79, 1.06)
		C.	(–147, –87)	D.	(147, 87)
		Hint
	15.	Determine whether the pair of matrices are inverses.
		A.	yes, because A · B = I.	B.	no, because A · B I
		C.	yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix.	D.	no, because fractions cannot be a part of an inverse
		Hint
	16.	Solve the system of equations 7x – 14y =4, 3x – 6y =17.
		A.	(2, 1)	B.	no unique solution
		C.	(3, –2)	D.	infinite solutions
		Hint