1.	Airline ticket prices for a trip from New York to Chicago vary widely on the Internet. The following table lists the Internet store, airline, and price for a roundtrip ticket from New York to Chicago. Consider how airline tickets vary from store to store. Reorganize the table to make it easier to compare stores' prices for the various airlines.
		A.
		B.
		C.
		D.
		Hint
	2.	Airline ticket prices for a trip from New York to Chicago vary widely on the Internet. The following table lists the Internet store, airline, and price for a roundtrip ticket from New York to Chicago. Consider how airline tickets vary from store to store. What is the mean price of a ticket at Traveltix?
		A.	$110.14	B.	$116.09
		C.	$115.96	D.	$107.74
		Hint
	3.	The table below shows the population in the state of Illinois for the past 100 years, in 10-year increments. Between which two years did the population increase the most?
		A.	1920–1930	B.	1960–1970
		C.	1950–1960	D.	1990–2000
		Hint
	4.	The table below shows the population in the state of Illinois for the past 100 years, in 10-year increments. Predict the population in the year 2050.
		A.	15,573,246	B.	23,737,491
		C.	20,010,342	D.	18,689,909
		Hint