Sales over the past 10 years are shown below. Using the method of least squares, calculate the values of a and b to find this regression equation.

Year	Sales
1	1,670
2	1,980
3	1,510
4	1,660
5	1,700
6	1,320
7	1,000
8	1,930
9	1,670
10	1,010

(Indicate a negative answer using a "-" sign. Do not round intermediate calculations and round your answer to 3 decimal places.)

Sales=Answer + Answerx What is your forecast for next year's sales?(Do not round intermediate calculations and round your answer to 2 decimal places.) Sales=Answer