Which graph represents a proportional relationship?

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.

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Given the graphed function below which of the following orders pairs are found on the inverse function