Question: If the forecast for period $5$ is equal to $275,$ use exponential smoothing to compute a forecast for period $7$ if alpha $=\mathrm{.}40.$ Please list steps to answer.

If the forecast for period $5$ is equal to $275,$ use exponential smoothing to compute a forecast for period $7$ if

alpha $=\mathrm{.}40.$ Please list steps to answer.