1.	Solve
		A.		B.
		C.	10	D.	7
		Hint
	2.	Solve
		A.	-1, 4	B.	1, 4
		C.	0	D.	-1
		Hint
	3.	Solve .
		A.	– < x <	B.	x <
		C.	x >	D.	0 < x <
		Hint
	4.	John ran a marathon on a windy day. He ran the first 13 miles into the wind, and the last 13 miles with the wind at his back, and he completed the course in 3 hours. How fast is John in still conditions if the wind speed was 4 miles per hour?
		A.	–1.6 mph	B.	12.7 mph
		C.	10.2 mph	D.	8.7 mph
		Hint
	5.	Solve .
		A.	– and 7	B.	–
		C.	7	D.	0 and 7
		Hint