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Mathematics, 03.12.2020 02:10 queentynaisa

ruby bought $18 worth of donuts and cookies. each donut costs $1 and each cookie costs $1.50. she bought a total of 15 donuts and cookies all together. graphically solve a system of equations in order to determine the number of donuts, x, and the the number of cookies, y, that ruby bought.

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ruby bought $18 worth of donuts and cookies. each donut costs $1 and each cookie costs $1.50. she bo...
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