Use exponential smoothing with trend adjustment to forecast demand for period $11.$ Let $\backslash$alpha $=0\mathrm{.}5,\backslash$beta $=0\mathrm{.}3,$ and let the initial trend value be $12$ and the initial forecast be $200.$

Period Actual

Demand

$1200$

$2212$

$3214$

$4222$

$5236$

$6221$

$7240$

$8244$

$9250$

$10266$