1.	Solve .
		A.		B.	3
		C.	5	D.	10
		Hint
	2.	Solve .
		A.	-7 or 2	B.	7 or 2
		C.	-7	D.	7
		Hint
	3.	Solve .
		A.	4	B.	-2
		C.	1 or 4	D.	0
		Hint
	4.	Solve .
		A.	5	B.	-2 or 7
		C.	-2	D.	-2 or
		Hint
	5.	The total resistance RT in a particular circuit is related to the other resistances in the circuit by the equation . Find R2 if RT = 2.4 ohms, R1 = 6 ohms, and R3 = 3 ohms.
		A.	4 ohm	B.	5.4 ohm
		C.	1 ohm	D.	3.6 ohm
		Hint