Nelson went to the taste of tacos, a festival where people come to taste a variety of tacos. The festival charges a admissions fee to attend and then charges $3 per taco. By the end of the festival, Nelson spent a total of, y, of $30 and purchased 6 tacos, x.
Which of the following equations would not represent this scenario
6x+30y=3
y-30=3(x-6)
y=3x+12
3x-y=-12