Guys please help ill do anything just do it least 1 correct

Show me how you find y and determine what y is you i appreciate it : )

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 t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.