A manager of a store that sells and installs spas w to prepare a forecast for January, February, and ants March of next year.
Her forecasts are a combination of trend and seasonality. She uses the following equation to estimate the trend component of monthly demand: F_t = 90 + 2t, where t = 0 in June of last year.
Seasonal relatives are 1.08 for January, -87 for February, and 1.01 for March.
What demands should she predict? (Round your answers to 2 decimal places.)
Month Forecast January of the next year _____ February of the next year _____ March of the next year _______