Ashirt originally priced at $30 has been discounted 20%

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.

Which of the following is true for the relation f(x)=2x^2+1

Solve the system of equations y= 3/2 - 1, -x+ y =-3