12. The values of the variable have been monitored $h(t)$. The results are shown in the following table. \begin{tabular}{|cc|} \hline $\mathrm{t} $ & $h(t) $ \hline Thline 0 & $0.8546$ \hline 1 & $-0.153855$ \hline 2 & $-0.0702176$ \hline 4 & $0.0402037$ \hline \end{tabular) where $t$ is in minutes and $h(t)$ in meters. By the method of least squares, fit the data to the model: $$ h(t)=a \cdot e^{-t}+b \cdot t \cdot e^{-t}+c \cdot e^{-0.1 t} $$ Report in order the values of $a, b$ and $c$. SP.JG.003