write an absolute value equation

Question

Fruit snacks are packaged into bags at a factory. Each bag should have 20 snacks in it, but a bag with 19 or 20 snacks is acceptable. Write an absolute equation in terms of x, where x is the number of snacks in a bag, that indicates the least and greatest number of snacks it is acceptable to have in one bag.

Answer 1

 

19 <= x <= 20

 

0 <= x-19 <= 1

 

0<= | x - 19 | <= 1