Answer: 10x$1.25=$12.50, 20x$1.25=$25.00, and 50x$1.25=$62.50. The expression you can also use would be y=1.25x, or just 1.25x (x representing the amount of water bottles).
Answer:
A-1.25×10=12.50
B-1.25×20=20.50
C-1.25×50=62.5
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