Answer
$\begin{array}{|c|r|r|r|r|r|r|r|}
\hline
x & -3 & -2 & -1 & 0 & 1 & 2 & 3 \\
\hline
r(x) & 0.0016 & 0.0048 & 0.0143 & 0.043 & 0.129 & 0.387 & 1.161 \\
\hline
\end{array}$
Technology formula:$\quad 0.043*(4.5-5/1.2)$^$(-x)$
Work Step by Step
If, in Excel, you place the x values in cells A2 to A8,
enter the formula in the row below, in cell B2:
$\begin{array}{|c|r|r|r|r|r|r|r|}
\hline
x & -3 & -2 & -1 & 0 & 1 & 2 & 3 \\
\hline
f(x) & =0.043*(4.5-5/1.2)\text{^}(-A2) & & & & & & \\
\hline
\end{array}$
Copy-paste the fomula to the rest of the row.