Several Years Ago, the Wild Rabbits of Australia Were Seriously $r$

Short Answer

Several years ago, the wild rabbits of Australia were seriously threatened by a virus that was accidentally released into their population. Suppose that the following table gives the number $r$ of rabbits (in millions) remaining $t$ months after the release of the virus.
$$\begin{array}{ccccccccccc}t \text { (months) } & 2 & 4 & 6 & 8 & 10 & 12 & 14 & 16 & 18 & 20 \\r \text { (millions) } & 1940 & 1842 & 1649 & 1328 & 1140 & 898 & 765 & 502 & 296 & 104\end{array}$$
Find the linear regression line for this data. Round to 3 decimal places.