The management of Kaldor, a manufacturer of electric motors, submitted the following data in the annual report to its stockholders. The table shows the net sales (in millions of dollars) during the 5 years that have elapsed since the new management team took over. (The first year the firm operated under the new management corresponds to the time period , and the four subsequent years correspond to

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Year, x12345Net Sales, y413428446473486?
Determine the equation of the least-squares line for these data and use it to predict the net sales for the upcoming year.
?

A. 550.5 millions of dollars
B. 523.5 millions of dollars
C. 506.5 millions of dollars
D. 529.5 millions of dollars
E. 516.5 millions of dollars

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Answer: C

Mathematics