Given the following forecasting data, using trend projection, the estimated prediction equation is $$

Month Period Demand $($in

Thousands$)$

$\backslash$table$[[$April$,1,19],[,,],[$May$,2,20]]$

June $,3,18$

July $,4,19$

August $,5,17$

hat$(y)=20\mathrm{.}1+5x$

hat$(y)=20\mathrm{.}1-\mathrm{.}5x$

hat$(y)=-\mathrm{.}5+20\mathrm{.}1x$

$y=20\mathrm{.}1+10x$