The following table shows the average rice yield Y, in tons per hectare, on Asian farms t years after 1980. Based on the regression equation, how much increase in yield is expected over a 5-year period?
t 5 10 20 25Y 3.38 3.61 3.96 4.14?
?
A. 0.20 tons per hectare
B. 0.04 tons per hectare
C. 0.36 tons per hectare
D. 3.21 tons per hectare
Answer: A
Mathematics
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