Marcy and Troy disagreed about the answer to a problem. Marcy said that the equation they were working on had more than one solution. If Marcy is correct, on which of these equations could they have been working?
Select one:
2x + 4 = 2(x + 2)
2x + 4 = 2(x + 3)
2x + 4 = 3x + 5
2x + 4 = 3x + 4