In 1945, when the united nations was formed, there were 51 member nations. in 1987, there were 159 member nations. write an equation that gives the number of nations in the un, y, in terms of the year, t. let t = 0 correspond to 1945 and assume that membership follows a linear pattern

15 points ! ~ see if you know the answer to both you!

With this one. will mark brainliest

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.