The table lists the average tuition and fees at private colleges and universities for selected years. Year Tuition and Fees 1985 1990 1995 2000 2008 5392 9337 12,413 16,174 25,146 (in dollars) (a) Find the equation of the least-squares regression line that models the data. y (Type the slope as a decimal rounded to three decimal places. Round the y-intercept to the nearest integer.)