please solve and explain!

1. Use The Quantity Theory of Money to solve for the unknowns. M = 4%, V = 0%, P = 6%, and Y =?% . M =?%, V = 3%, P = 4%, and Y = 5% . M = 5%, = 4%, P =?%, and Y = 7% . M = 4%, V =?%, P = 2%, and Y = -5%