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I need help on number 20 click on this question and the photo and plz help!

I need help on number 20 click on this question and the photo and plz help!-example-1

1 Answer

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The 9-pack cost the least per bottle b/c 3.79÷6=6.31, $4.50÷9=0.5, and 6.89÷12=0.574
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