1.	Using the directed graph, how many different routes are there to get from the Boston plant to the Worcester plant in exactly two transfers?
		A.	2	B.	3
		C.	1	D.	4
		Hint
	2.	Using the directed graph, how many different routes are there to get from the Boston plant to the Fitchburg plant in at most two transfers?
		A.	5	B.	3
		C.	2	D.	4
		Hint
	3.	How many ways can supplies be transferred directly to Fitchburg from other cities?
		A.	1	B.	3
		C.	4	D.	2
		Hint
	4.	How many ways can supplies be transferred directly to Providence from other cities?
		A.	3	B.	0
		C.	1	D.	2
		Hint
	5.	To which city is there exactly one way in which supplies can be transferred directly from another city?
		A.	Providence	B.	Worcester
		C.	Lowell	D.	Boston
		Hint