A researcher creates a scatter plot that displays the relationship between the number
 of years in business, x, and the percentage of company business that is fair trade, y.
 The researcher creates a line of best fit, y = 0.091x + 0.060, and wants to find the
 residuals for the companies that have been in business for 3 years.
 Find the residuals for the two points representing companies that have been in
 business for 3 years, (3,0.42) and (3,0.3).
 a.