1.	Solve a = -12 - 7.
		A.	19	B.	-5
		C.	5	D.	-19
		Hint
	2.	Find the value for t in t = 41 - (-19).
		A.	-22	B.	22
		C.	60	D.	-60
		Hint
	3.	Solve f = 3 – 5.
		A.	f = -2	B.	f = 2
		C.	f = -8	D.	f = 8
		Hint
	4.	Solve -17 – 12 = u.
		A.	u = 29	B.	u = 5
		C.	u = -5	D.	u = -29
		Hint
	5.	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