Paul's bathtub is clogged. he has to empty 30 liters of water by hand. if paul carries two buckets each trip, what combination of sizes allow him to empty the bathtub in exactly 4 trips?

Fred has a total of 62 dvd and cd. if the number of cd is three more than two times the number of dvd, how many cd does he have?

What’s the domain of this function? fastttt

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?