1.	Solve x + 4 = 7.
		A.	–3	B.	–11
		C.	3	D.	11
		Hint
	2.	Solve z + 6 = 3.
		A.	–3	B.	–9
		C.	3	D.	9
		Hint
	3.	Solve a + 6 = –2.
		A.	–4	B.	–8
		C.	8	D.	4
		Hint
	4.	Decide which addition equation the model represents. Then solve the equation.
		A.	y + 2 = –7; y = –5
		B.	y – 7 = 2; y = –5
		C.	y – 7 = 2; y = 9
		D.	y + 2 = –7; y = –9
		Hint
	5.	Solve c + 4 = 2.
		A.	–6	B.	6
		C.	2	D.	–2
		Hint