Set up and solve the appropriate equations for s and t.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Extra points! find the missing dimension! need asap

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.