3. A factory is producing and stockpiling metal sheets to be shipped to an automobile manufacturing plant. The factory ships only when there is a minimum of 2,250 sheets in stock at the beginning of that day. The table shows the day, x, and the number of sheets in stock, y , at the beginning of that day. Day(x) Sheets in Stock (y) 860 930 1000 1150 1200 1360 a.) Write a linear regression equation y = a + bx predicting the number of sheets in stock against days (x). b. Construct a scatter diagram. c.) Use this equation to determine the day the sheets will be shipped