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 = 7 5s + 8t = 12	B.	-2s + 5t = 7 s + 8t = 12
		C.	-2s = 7 5t = 12	D.	-2s + t = 12 5s + 8t = 7
		Hint
	3.	Solve using inverse matrices.
		A.	(4, 4)	B.	(4, -4)
		C.	(-4, 4)	D.	(-4, 0)
		Hint
	4.	Which of the following is a matrix equation for the system 5x – 3y =11, –3x + 2y = 7?
		A.
		B.
		C.
		D.
		Hint
	5.	Solve the system of equations 7x – 14y =4, 3x – 6y =17.
		A.	no unique solution	B.	infinite solutions
		C.	(2, 1)	D.	(3, –2)
		Hint