Please help me with the questions.

$(1)$ What is the period $13$ forecast using a $3-$period simple moving average $($rounded up to the nearest whole number$)?$

$(2)$ What is the period $13$ forecast using a $4-$period simple moving average $($rounded up to the nearest whole number$)?$

$(3)$ What is the period $13$ forecast using a weighted moving average $($rounded up to the nearest whole number$)?$

w$1=\mathrm{.}4,$ w$2=\mathrm{.}3,$ w$3=\mathrm{.}2,$ w$4=\mathrm{.}1$

$(4)$What is the period $13$ forecast using exponential smoothing with a smoothing constant of $0\mathrm{.}3($rounded up to the nearest whole number$)?$Demand Over Time