Please answer the question correctly with factual information for brainliest.

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.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?