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 = 7 5t = 12	B.	-2s + t = 12 5s + 8t = 7
		C.	-2s + t = 7 5s + 8t = 12	D.	-2s + 5t = 7 s + 8t = 12
		Hint
	3.	What is the first step in solving the matrix equation
		A.	Multiply 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.	Divide each side of the matrix equation by
		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.	(2, 1)	B.	no unique solution
		C.	(3, –2)	D.	infinite solutions
		Hint