Which values of a and b make the equation true? (2xy)^4     =4x^a (y^b) 4xy a)a = 0, b = 0 b)a = 3, b = 3 c)a = 4, b = 4 d)a = 5, b = 5

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?

Savannah talked for 6 minutes on the phone. catherine talked for n minutes. catherine talked 3 times as long as savannah. how long did nathan talk?