Shell Corp has been in business for 1 year. During that time, Shell has seen its business grow (see table below). Although Shell is extremely happy with the results and has hired you to help forecast sales for the next 12 months.

Month Sales (units)

1 5,384

2 8,081

3 10,282

4 9,156

5 6,118

6 9,139

7 12,460

8 10,717

9 7,825

10 9,693

11 15,177

12 10,990

create an excel forecasting the sales for the next 12 months