If p(x) = x2 – 1 and (x) = 5(x-1), which expression is equivalent to (p-2)(x)?
5(x - 1) – x2-1
(5x – 1) – (x2 - 1)
(x2 - 1) -5(x - 1)
(x2 - 1) – 5x - 1

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.