Answer: Tony must get 6 more hits in the seasons last week.
Explaination:
272 is the amount of hits that Tony started with.
During the second to last week of the season, Tony got 22 more.
272 + 22 = 294
Since Tony must get 300 hits by the last week,
300 - 294 = 6
Tony needs 6 more hits in the seasons last week.
Hope this helps! :)