1.	Find the value of .
		A.	3	B.	17
		C.	-17	D.	-3
		Hint
	2.	Find the value of .
		A.	24	B.	-24
		C.	-28	D.	28
		Hint
	3.	Solve the systems of equations by using matrix equations.
		A.		B.
		C.		D.
		Hint
	4.	Find the inverse of .
		A.	0	B.	does not exist
		C.		D.
		Hint
	5.	Solve this problem using matrix equations.How many liters of 0.25 solution and 0.40 solution should be combined to make 10 liters of 0.35 solution?
		A.	3.33 L of the 0.25 solution and 6.66 L of the 0.40 solution.
		B.	2.5 L of the 0.25 solution and 7.5 L of the 0.40 solution.
		C.	4.5 L of the 0.25 solution and 5.5 L of the 0.40 solution.
		D.	6.66 L of the 0.25 solution and 3.33 L of the 0.40 solution.
		Hint