Answer :
Using the linear function, it is found that the correct option is given by:
- On average, plumbers in the city charge a flat fee of $50, and $80 for each hour they work.
Linear functions modeling a cost have the following format:
[tex]C(t) = C(0) + at[/tex]
In which:
- C(0) is the flat fee.
- a is the cost per unit of time.
In this problem, the cost for t hours of work is modeled by:
[tex]C(t) = 50 + 80t[/tex]
Which means that the correct statement is:
- On average, plumbers in the city charge a flat fee of $50, and $80 for each hour they work.
To learn more about linear functions, you can take a look at https://brainly.com/question/16302622