Problem 3-11 (Algo) Chea A manager of a store that sells and installs spas wants to prepare a forecast for January, February, and 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-90+ 61, where t-0 in June of last year. Seasonal relatives are 1.07 for January. 88 for February, and 96 for March. What demands should she predict? (Round your answers to 2 decimal places.) Month January of the next year February of the next year Forecast March of the next year