12 degree C fell to -5 degree C WHAT IS THE DIFFERENCE

What is the solution to the equation 9^(x+1) =27

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.

2/3(-6y+9x) expand each expression using the distributive property