find all pairs of positive unit fractions that add up to 1/8

Question 5 spring semester final exam math evaluate

100 points, hi, i’m not sure how to get the equation from the graph and table.

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.