1.	Find the difference –5 – (-11).
		A.	-6	B.	16
		C.	-16	D.	6
		Hint
	2.	Evaluate q – r if q = -13 and r = -2.
		A.	15	B.	11
		C.	-11	D.	-15
		Hint
	3.	Evaluate x – y + z if x = 12, y = 20, and z = -9.
		A.	23	B.	-17
		C.	1	D.	-41
		Hint
	4.	Evaluate r – s – t if r = -5, s = -10, and t = -15.
		A.	-10	B.	20
		C.	0	D.	-30
		Hint
	5.	A submarine started at a depth of 150 feet below sea level and descended 355 feet. What is the new depth of the submarine?
		A.	370 feet	B.	205 feet
		C.	505 feet	D.	0 feet
		Hint