Given the following data, use least$-$squares regression to derive a trend equation:

$\backslash$table$[[$Period$,1,2,3,4,5,6],[$Demand$,6,9,8,9,11,15]]$

The least$-$squares regression equation that shows the best relationship between demand and period is $($round your responses to two decimal places$)$:

hat$(y)=,+x,$

where hat$(y)=$ Demand and $x=$ Period.

ALSO PERIOD $7$ FORECAST AND PERIOD $12$ FORECAST PLEASE