Question

In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). The data for a 9 year period is given in the table. The equation of the line of best fit for this data is y = 47.3 + 0.78x. How many bushels of wheat per acre can be predicted if it is expected that there will be 17 inches of rain?

Answer 1

The function is:
y = 47.3 + 0.78 x,
where x represents the rainfall ( in inches ).
For x = 127:
y = 47.3 + 0.78 * 17
y = 47.3 + 13.26
y = 60.56
Answer: There will be 60.56 bushels of wheat per acre.