exam 1: select * from film where replacement_cost BETWEEN 12.98 AND 16.99
exam 2: select first_name,last_name from actor where first_name IN('Penelope','Nick','Ed')
exam 3: select * from film WHERE rental_rate IN(0.99,2.99,4.99) AND replacement_cost IN(12.99, 15.99, 28.99)