Find sin2u given sinu=-5/7 and pi

3. solve the given inequality and graph the solution on a number line.

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 the discriminant if a quadratic equation is 4 which statement describes the roots?