1.	Write a matrix for the system of equations.
		A.		B.
		C.		D.
		Hint
	2.	Write the matrix equation as a system of linear equations.
		A.	-2s + t = 12 5s + 8t = 7	B.	-2s = 7 5t = 12
		C.	-2s + 5t = 7 s + 8t = 12	D.	-2s + t = 7 5s + 8t = 12
		Hint
	3.	What is the first step in solving the matrix equation
		A.	Divide each side of the matrix equation by
		B.	Multiply each side of the matrix equation by the identity matrix.
		C.	Find the inverse of
		D.	Multiply each side of the matrix equation by
		Hint
	4.	Given that the inverse of the coefficient matrix is , solve the matrix equation .
		A.	(4, 3)	B.	(-2, 3)
		C.	(2, 4)	D.	(-4, 3)
		Hint
	5.	Solve using inverse matrices.
		A.	(-4, 0)	B.	(-4, 4)
		C.	(4, -4)	D.	(4, 4)
		Hint