Given a coal-fueled heating system. The consumption of the coal depends on the average hourly temperature. A random sample was collected and showed in the following. temperatures (x. in Fo): 28, 28, 32.5, 39, 45.9, 57 8, 58.1, 62.5, consumption(y. in tons): 12.4, 11.7, 12 4, 10.8, 9.4, 9.5, 8.0, 7.5. Er, - 351.8, Cy, -81.7, Cry, = 3413.11, ) - 16874.76. Keep four decimal places