How to solve The following problems $($operations management$)$

What is $2009\text{'}$s forecast using a four$-$period weighted moving average and weights of $\mathrm{.}5,\mathrm{.}25,\mathrm{.}15$ and $\mathrm{.}1?$

$2,620$

$1,960$

$2,730$

$2,680$

$2,320$

What is $2009\text{'}$s forecast using exponential smoothing with alpha $=\mathrm{.}3,$ if the forecast for $2007$ was $2,200?$

$2,566$

$2,524$

$3,096$

$2,984$