1.	Which equation does the model represent?
		A.	x + (-5) = 1	B.	x + (-5) = -1
		C.	x + 5 = -1	D.	x + 5 = 1
		Hint
	2.	To model the equation x + (-3) = 6 using algebra tiles, which tiles should you use on the left side of the mat?
		A.	one green rectangular tile and 3 yellow square tiles	B.	one red square tile and 3 yellow square tiles
		C.	one yellow square tile and 3 red square tiles	D.	one green rectangular tile and 3 red square tiles
		Hint
	3.	Solve the equation x + 8 = 4.
		A.	x = 12	B.	x = 4
		C.	x = -4	D.	xv = -12
		Hint
	4.	Which equation does the model represent?
		A.	x + 4 = -7	B.	x + (-4) = 7
		C.	x + (-7) = 4	D.	x + 7 = -4
		Hint
	5.	Carmen and her friend Marva have a total of 15 pets. If Marva has 12 pets, how many pets does Carmen have?
		A.	5	B.	31
		C.	3	D.	27
		Hint