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 the prices for a particular airline.
		A.
		B.
		C.
		D.
		Hint
	2.	The following map shows the normal peak times for fall foliage. Why are the leaves on trees turning colors as far south as New Mexico and Tennessee in late September while the leaves in areas to the north don't change colors until the middle of October?
		A.	The temperatures in and around mountains are much warmer than some of the areas surrounding them. Thus, the leaves change color earlier.
		B.	The lack of rain throughout the year dries out the leaves much more than in some of the surrounding areas. Thus, the leaves change color earlier.
		C.	The intense heat from the summer dries out the leaves much more than in some of the surrounding areas. Thus, the leaves change color earlier.
		D.	The temperatures in and around mountains are much cooler than some of the areas surrounding them. Thus, the leaves change color earlier.
		Hint
	3.	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.	20,010,342
		C.	23,737,491	D.	18,689,909
		Hint
	4.	Joseph bakes many plates of cookies to sell at the bake sale once a month. He found that the amount of money he received for selling the cookies depended on the price he asked. He created the graph below to estimate his revenue (money received) on a single day for any price. Approximately what price gives the greatest revenue for a single day?
		A.	$32	B.	$15
		C.	$16	D.	$20
		Hint