Favors Distribution Company purchases small imported trinkets in bulk, packages

them, and sells them to retail stores. They are conducting an inventory control study of all their

items. The following data for the year $2006$ are for one such item, which is not seasonal.

Month : Jan Feb Mar Apr May Jun Jul Aug

Sales : $1119171415162015$

a$.$ Use trend projection to estimate the relationship between time and sales $($state the trend line equation in this problem$).$

b$.$ Calculate forecasts for March $2007,$ April $2007,$ and January $2008$