The scatter plot shows the attendance in millions at theme parks in a certain country for years after 1990. The equation of the trend line shown is y=5.2x+259, where x represents the number of years after 1990 and y represents the attendance, in millions of people. Estimate the attendance at theme parks in the country in 2001. Use pencil and paper. What do you think the scatter plot showing the annual earnings from these theme parks would look like? Explain.