1.	A geometrical representation of a map is called a ______?______.
		A.	pattern	B.	coordinate plane
		C.	chart	D.	directed graph
		Hint
	2.	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.	4
		C.	3	D.	1
		Hint
	3.	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.	4	B.	5
		C.	3	D.	2
		Hint
	4.	To which city is there exactly one way in which supplies can be transferred directly from another city?
		A.	Providence	B.	Worcester
		C.	Boston	D.	Lowell
		Hint
	5.	Which city has exactly two ways in which supplies can be transferred from other cities?
		A.	Boston	B.	Providence
		C.	Lowell	D.	Worcester
		Hint