Mathematics, 19.11.2020 17:50 SkyMelvin
John, Cindy, and Isaiah went to the store to buy school supplies. John bought 2 pens, 3 folders, and 4 notebooks for a total of $20. Cindy bought 5 folders and 5 notebooks for a total of $25. Isaiah bought 3 pens, 1 folder, and 2 notebooks for a total of $11. Which system of equations can be used to find the cost of each pen, p, folder, f, and notebook, n?
Answers: 3
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John, Cindy, and Isaiah went to the store to buy school supplies. John bought 2 pens, 3 folders, and...
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