For Activities 5 through 8, calculate and write a sentence interpreting each of the following descriptions of change:
a. change
b. percentage change
c. average rate of change
Airline Profit AirTran posted a profit of $17.6 million at the end of 2009 compared with a loss of $121.6 million in 2008.
(Source: online Wall Street Journal, January 27, 2010)
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