Given that the function that represents the total cost Cristiano spends having his house cleaned is C(v)=125v, where v represents number of visits.
The amount Cristiano spends per visit is given by
[tex] \frac{Total\, cost}{number\, of\, visits} = \frac{C(v)}{v} = \frac{125v}{v} =125[/tex]
Here, the input is the number of visits while the output is the total cost spent.
