b$)$ Using a $3-$week weighted moving average, with weights of $0\mathrm{.}20,0\mathrm{.}35,$ and $0\mathrm{.}45,$ using $0\mathrm{.}45$ for the most recent week, the forecasted demand for the week of October $12=$ response to two decimal places and remember to use the weights in appropriate order $-$ the largest weight applies to most recent period and smallest weight applies to oldest feriod.$)$