Complete the square. What is the Vertex? x^2+14x-46

Can anyone me with 32,33,36,37,and 40.

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.

Bring the fraction a/a-4 to a denominator of 16-a^2