AND inequalities involving satisfying BOTH of two requirements. You can think of it as a "BETWEEN" concept.
Examples:
A coupon applies to people older than 16 and younger than 21:
16 < x < 21.
A graduated cylinder has more than 8 mL and less than 12 mL.
8 The sticker must be greater than 2 inches and less than 5 inches long. Which is NOT part of the requirement for the size x of the sticker, in inches?
Ox>2
*>5
*<5