Answer:
See above graph
Step-by-step explanation:
In between those whole numbers, each mark represents ⅕ [or 0,2], therefore you move one-fifth block to the right of 20 with an open circle, then shade everything to the left.
≥, ≤ → Solid Circle [●]
>, < → Blank Circle [○]
I am joyous to assist you anytime.
