Raider Sailboats demand is listed below. Using Least Squares $($Linear Trend$),$ estimate for yourself the demand for year $5.$ Then provide your own seasonal expectations for demand for Spring of year $5.$

$\backslash$table$[[,$Year$],[$Season$,1,2,3,4],[$Winter$,1,400,1,200,1,000,900],[$Spring$,1,500,1,400,1,600,1,500],[$Summer$,1,000,2,100,2,000,1,900],[$Fall$,600,750,650,500]]$