Rudy is twice as old as Juanita. In 4 years, Ruby will be 8 years older than Juanita will be then. Find their ages. Use r and j as the variables.

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.