The Spanish club is selling plates of food as a fundraiser. A plate with 2 tacos, 2 cheese enchiladas, and 1 tamale costs $8.50. A plate with 3 tacos, 2 cheese enchiladas and 2 tamale costs 13.00. A plate with 1 taco 3 cheese enchiladas and 2 tamales cost 11.25. If x, y, and z represent the costs of a taco, enchilada, and 2 tamale respectively, write any one of the equations that can used in a system to determine the cost of a taco, enchilada, and tamale.