HELP NEEDED PLEASE How do the graph of f(x) and f−1(x) relate

1.reflected through y=x

2.reflected through y-axis

3.reflected through y=-x

4.reflected through x-axis

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.