Task
Take the (integer) number of human years that the dog has lived, \$n\$, as input and return its age in dog years, \$d\$, to two decimal places.
The number of human years, \$n\$, will be between \$1\$ and \$122\$ inclusive: \$n \in [1,122], n \in \Bbb{N}\$.
According to BBC's Science Focus Magazine, the correct function for determining your dog's age is: $$ n = 16 * \ln(d) + 31 $$$$ n = 16 \times \ln(d) + 31 $$ Where
\$n\$ is the age in human years
\$d\$ is the age in dog years
Rules
The final output in dog years must be a decimal, rounded to 2 decimal places.