Hey guys... anybody got tips for this one?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585