Ban Speedrun lolololl

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

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.

43lbs of tomatos cost $387. how much would 41lbs cost