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1. Internet: $80, with no sales tax, plus $10 shipping fee 2. Store X: $90, a 10% discount, plus 10% tax on discounted price 3. Store Y: $90, no tax 4. Store Z: $90, a 10% sales tax, and $10 rebate after tax Isaac can purchase a certain item in four different ways, as shown in the table. What is the lowest price for which he can purchase this item?

This problem refers to a figure in its source book that isn't reproduced here.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #96798