1.	Use the substitution method to solve m - n = 7 and 3m + 2n = 6.
		A.	(-5, 2)	B.	(4, -3)
		C.		D.	(-3, -10)
		Hint
	2.	Solve the system of inequalities by graphing.
		A.		B.
		C.		D.
		Hint
	3.	Selena has 31 days to complete her quilt for the county fair. The blue squares in the quilt can be sewn at a rate of 4 squares per day, and the white squares at a rate of 7 squares per day. The quilt can have up to 96 squares total. The blue fabric b costs about $0.80 per square and the white fabric w costs about $1.20 per square. Selena wants to keep costs at a minimum. Write the function that describes the cost of the quilt.
		A.	96 = 4b + 7w
		B.	96 = 0.80b + 1.20w
		C.	f(b, w) = 0.80b + 1.20w
		D.	f(b, w) = 4b + 7w
		Hint
	4.	A baker earns 15¢ profit per glazed doughnut g, and 40¢ profit per jelly doughnut j. If a customer wants to buy no more than a dozen doughnuts and wants to try at least one of each kind, what is the maximum profit the baker can earn?
		A.	$4.80	B.	$3.30
		C.	$4.55	D.	$1.80
		Hint
	5.	The solution of a system of three linear equations in three variables, x, y, and z, is called a(n) ____ (x, y, z).
		A.	ordered pair	B.	integer
		C.	ordered triple	D.	sum
		Hint
	6.	A graph of a system of three linear equations in three variables is shown below. How many solutions does the system have?
		A.	2	B.	1
		C.	infinite number	D.	0
		Hint
	7.	Which of the following systems of equations is inconsistent?
		A.	3y + 2x = 13 6y + 4x = 3
		B.	y = 2x – 3 y = –3x + 4
		C.	y = 7x – 2 y = –2x – 5
		D.	4y – x = 12 3y – 2x = 1
		Hint
	8.	Which of the following systems of equations is not consistent and independent?
		A.	2y + 4x = 3 7y + 5x = 18
		B.	7y + x = 9 3y + 9x = 4
		C.	–y – 5x = 1 4y + 3x = 8
		D.	y + 4x = 10 6y + 24x = 60
		Hint
	9.	Which is true for the following system of equations? 3x - y = 1 x + 2y = 7.
		A.	cannot be determined from information given	B.	y = x
		C.	y > x	D.	y < x
		Hint
	10.	Which graph represents the following system:
		A.		B.
		C.		D.
		Hint