Find the equation of the least squares line.The paired data below consist of the costs of advertising (in thousands of dollars) and the number of products sold (in thousands). 
A. y = 55.8 - 2.79x
B. y = 55.8 + 2.79x
C. y = -26.4 - 1.42x
D. y = 26.4 + 1.42x
Answer: B
Mathematics
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