Doctorates The following table shows the annual number of PhD graduates in a country in various fields. Social Sciences 2010 2012 2014 2016 2018 2020 Natural Sciences 5,000 5,400 5,900 6,200 6,300 6,700 Engineering 7,600 8,400 9,600 9,500 10,200 10,800 7,800 8,600 8,700 9,000 8,900 8,900 Education 5,200 4,800 4,800 5,100 4,800 4,600 MY NOTES (a) With x = the number of social science doctorates and y = the number of education doctorates, use technology to obtain the regression equation. (Round coefficients to three significant digits.) y(x) =