What is the area of the triangle whose vertices are (0,0), (3,0) and (0,4)?

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Can someone pls ! pls answer all. no explanation needed..

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.