The admission fee for a soccer game is $5 for adults and $3 for children. 2,600 people attended the game and $11,400 is collected in ticket sales. which system of equations yields the cost of an adult ticket, a, and a child ticket, c? a) a + c = 2,600 a + c = 11,400 b) a + c = 11,400 5a + 3c = 2,600 c) a + c = 2,600 5a + 3c = 11,400 d) 5a + 3c = 2,600 5a + 3c = 11,400