C16 · Complete neutral exit
Need exactly 24 items for a fictional community display. Pretend A packs 6 for $18; B packs 8 for $32. Whole packs and no extras. Compare full costs for the same quantity. Work out the whole-dollar cost of one item in each offer. Explain how those unit costs help you check the full-cost comparison.
Use your own model, number sentence/strategy, check and useful message. Record actual support.