Ireally need gwen pays the entry fee and buys 10 tickets. it costs her a total of $30. tristan pays the entry fee and buys 15 tickets. it costs him a total of $40. keith pays the entry fee and buys 10 tickets. it costs him a total of $30. in this task, let x represent the entry fee and y represent the cost of each ticket in dollars. how much gwen paid. y = 10x + 30 how much tristan paid. y = 15x + 40 how much keith paid. y = 10x + 30 answer this: which two equations could you use as a system to find the cost of the entry fee and the cost of each ticket? why?