Problem $3-11($Algo$)$

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: $F_t=80+2t,$ where $t=0$ in June of last year. Seasonal relatives are $\mathrm{.}93$ for January, $1\mathrm{.}12$ for February,

and $1\mathrm{.}04$ for March. What demands should she predict?

Note: Round your answers to $2$ decimal places.