Question

The average size of farm in the United States increased 100 acres in 1920 to 700 acres in 1980. Let y be the average size x years after 1900. In what year was the average size 400 acres?

Answer 1

Answer:

Number of years = 1980 – 1920 = 60

Total growth in farm size between (1920-1980) = 700 acres

Average yearly growth in farm  size (x) = (700 acres – 100 acres)/ 60 = 600/60 = 10 acres

Therefore:

10 acres X 30 years = 300 acres

1920 + 30years = 1950

Answer 2

Answer:

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