Answer :
Answer: [tex]12< x \leq 20[/tex]
Step-by-step explanation:
Given
x is at a distance of 20 or less i.e. x can be 20 or less
[tex]x\leq20[/tex]
and it starts from the number 12 i.e.
[tex]12< x[/tex]
In interval notation it is
[tex]12< x \leq 20[/tex]