Two buses leave a station at the same time and travel in opposite directions. One bus travels 19kmph slower than the other. If the two buses are 543 kilometers
apart after 3 hours, what is the rate of each bus?

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

3. find the radius of circle p.4. find 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.