Write about a real world situation that fits the following linear function: y=-20x+220 be sure to include what all four parts in your story. (what part represents what)

If a person have 220 $ and he spends 20 $ every day in how many days he will have 0 dollars left .
instead of y we would put 0

0= -20x+ 220
-220 = -20x
we divide both sides by -20
11 =x
after 11 days that person will have 0 $ left

Where is your question?