The graph shows the number of acres, in millions of farmland in the United States from 1975 to 2008, U. S. Farmland Area
Acres (in millions)
1,080
1,060
1,040
1,020
1,000
980
960
940
920
900
02
1975 1980 1985 1990 1995 2000 2005 2010
Years
Which statement describes the average rate of change of the graph?
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The number of acres of farmland in the United States decreases by 0.21 million each year.
The time it takes the farmland in the United States to decrease by 160 acres is 33 years,
Every 5 years, the amount of farmland in the United States decreases by 20 acres.
The amount of farmland in the United States decreases by 4.8 million acres each year.