Help Meh Pls ASAP y is directly proportional to the square of x. Given that y=32 when x=4, find the value of x when y=18

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.