The Supraplex Movie Theater allows customers to order movie tickets online. The theater charges a service fee in addition to the cost of the tickets. The total price for a adults and c children is 10.5a+7c+3 dollars. Mariana's dad ordered tickets to the new dinosaur movie for their family, which has 2 adults and 4 children. What price will Mariana's dad pay for the movie tickets?

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.