X/2+10=x-3 plz tell me the answer and show me the work

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

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.

Find the maximum value of p= 4x + 5y subject to the following constraints :