on monday byron spent $8.00 on lunch to purchase two tacos and one burrito. on wednesday he purchased one enchilada, one taco, and one burrito and spent $8.50.on friday it cost byron $10.00 for two enchiladas and two tacos .If t representsthe cost of a taco, b represents the cost of a burrito, and e represents the cost of an enchilada , which system of equations can be used to find the cost of taco , t?