1.	Find the inverse of .
		A.		B.
		C.		D.
		Hint
	2.	Which of the following shows the system of equations using a matrix equation?
		A.		B.
		C.		D.
		Hint
	3.	Solve the systems of equations by using matrix equations.
		A.		B.
		C.		D.
		Hint
	4.	Find the inverse of .
		A.		B.	0
		C.	does not exist	D.
		Hint
	5.	Find the inverse of .
		A.		B.
		C.		D.
		Hint