How do you solve this (Geometry)

Need on this one asap im almost done with this subject

(x-5)1/2+5=2 what is a possible solution?

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.