An ice cream store has been open for one full year, and they have kept detailed records of customer demand by day as well as data on possible causal factors $($ weather $,$ ?promotions, moves by competition, etc. $).$ ?Which of these methods are realistic and useful for the coffee shop to use in forecasting daily demand going forward? $($ select all that apply $)$

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Exponential smoothing with seasonal and trend adjustments

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None of these tools would be useful

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Regression

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Delphi method