Anew type of pump can drain a certain pool in
8
hours. an older pump can drain the pool in
12
hours. how long will it take both pumps working together to drain the pool?

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Sum of the interior angles of a pentagon

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.