Can anyone please help me with this Operations on Functions Algebra 2 Math Question? Soon as possible!

If f(x) = x^2, and g(x) = 5x, find g[f(3)]

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.

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex