1.	The sum of two negative rational numbers is _______.
		A.	positive	B.	one
		C.	zero	D.	negative
		Hint
	2.
		A.		B.
		C.		D.
		Hint
	3.	Evaluate d - c if d = 1.7 and c = -3.8.
		A.	-5.5	B.	2.1
		C.	-2.1	D.	5.5
		Hint
	4.	Find 4.5 + (-2.9) + 3.2.
		A.	10.6	B.	-4.8
		C.	4.8	D.	-10.6
		Hint
	5.	Find 9.2 – 3.1.
		A.	12.3	B.	-6.1
		C.	-12.3	D.	6.1
		Hint