The amount of water in the pool after t minutes is modeled by the linear function [tex]V(t) = V(0) - 5t[/tex], hence it is a function of time.
A linear function for the amount of water in the pool, considering that it is drained at a rate of a gallons per minute, is modeled by:
[tex]V(t) = V(0) - at[/tex]
In this problem, draining her hot tub at a rate of 5.5 gallons per minute, hence [tex]a = 5.5[/tex], and:
[tex]V(t) = V(0) = 5.5t[/tex]
Which is a function of time.
To learn more about linear functions, you can take a look at https://brainly.com/question/13488309