1.	Solve 18 + (-21) = f.
		A.	3	B.	-39
		C.	-3	D.	39
		Hint
	2.	Evaluate the expression |a + b| if a = 3 and b = -4.
		A.	-1	B.	1
		C.	7	D.	-7
		Hint
	3.	Evaluate the expression 3 + x + y + (-7) if x = -2 and y = 5.
		A.	2	B.	-1
		C.	1	D.	-2
		Hint
	4.	A football team has the ball on its own 20-yard line. What yard line will the ball be on after they gain 5 yards on a running play?
		A.	25-yard line	B.	10-yard line
		C.	30-yard line	D.	15-yard line
		Hint
	5.	Solve 17 + (-21) + (-16) + 22 = x.
		A.	x = 76	B.	x = -32
		C.	x = -42	D.	x = 2
		Hint