Brightness up inequality which can be used to determine o, The number of outfit Joseph can’t purchase well staying within his budget.

let o be the number of outfits, then
o*53.96 shoud be less than or equal to 620 - all what he bought, so:
Total money: $620
Spent money: $620 - $440.12 - $19.26 - 25.72 = $134.9
The inequality will be:
53.96o ≤ 134.9
o ≤ 2.5