Mason stands on the $5^\text{th}$ step of a vertical ladder. The ladder has $15$ steps, and the height difference between consecutive steps is $0.5\text{ m}$. $h(n)$ models the height above the ground of Mason's feet (in $\text{m}$) after moving $n$ steps (if Mason went down the ladder, $n$ is negative.) **Which number type is more appropriate for the domain of $h$?** [[☃ radio 1]] **What's the appropriate domain?** [[☃ radio 2]]