1.	Solve a = -12 - 7.
		A.	-19	B.	5
		C.	-5	D.	19
		Hint
	2.	A hiker begins on top of a mountain that stands 12,500 feet above sea level. He walks down to the valley that is 250 feet below sea level. What is his change in elevation?
		A.	12,750 feet	B.	-12,250 feet
		C.	12,250 feet	D.	-12,750 feet
		Hint
	3.	Solve t = -42 – (-15).
		A.	t = -57	B.	t = 57
		C.	t = 27	D.	t = -27
		Hint
	4.	Evaluate y – (-6) if y = -2.
		A.	8	B.	-4
		C.	4	D.	-8
		Hint
	5.	Evaluate x – m if x = -6 and m = 8.
		A.	-14	B.	2
		C.	14	D.	-2
		Hint