The points O, P, Q and R all lie on the same line segment, in that order, such that the ratio of OP: PQ: QR is equal to 1:1: 3. If OR= 10, find OQ.

Astudent simplified a rational expression as shown.

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.

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent