Bob is going to china, and he wants to bring some dvds on the airplane. if bob has a collection of 15 dvds, in how many ways can he bring 3 of them?

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

Ineed to know the answer to this algebra question.