C19 · Complete neutral exit
For a fictional class activity, need exactly 24 items. Pretend A packs 6 for $10; B packs 8 for $14. One $5 fee, budget $50. Whole packs/no extras. Choose lower cost among valid plans; if tied choose fewer packs. Send a useful note.
Use your own model, number sentence/strategy, check and useful message. Record actual support.