What is the equation of the eclipse with focus (0,,-7) and vertices (0,,-8)

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.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Having a hard time understanding this question (see attachment).