A family is comparing different car seats. One car seat is designed for a child up to and including 26 lb. Another car seat is designed for a child between 18 lb and 40 lb. A third car seat is designed for a child between 25 lb and 75 ​lb, inclusive. Model those ranges with compound inequalities. Which car seats are appropriate for a ​33-lb ​child? The inequality for a child up to and including 26 lb is ________.