The domain of a function are the possible input values, the function can take.
The possible domain is: [tex]\mathbf{(-\infty,0]}[/tex]
The domain of the function is the set of possible values of d.
Because d represents the depth of water,
The starting value can take any value, less than 0
But the end value must be 0 (i.e. the surface of water)
This means that, the domain of the function will be from negative infinity to 0
Hence, the domain is [tex]\mathbf{(-\infty,0]}[/tex]
Read more about domains at:
https://brainly.com/question/1632425
