A diver descends from an elevation of 2 feet below sea level to an elevation of 110 feet below sea level in 2 equal intervals. What was the diver's change in elevation in each interval?

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.