a salesman gets a commission of 2.4% on sales up to sh. 100,000. he gets an additional commission of 1.5% on sales above this. calculate the commission he gets on sales worth sh. 280,000

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.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

State one method by which you can recognize a perfect square trinomial.