Please help me solve this equation​

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.

Corresponding angles are a. always b. sometimes c. never congruent

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?