A popular sports drink can be made by adding 15 grams of powdered drink mix to 10 ounces of water. However, you can make as much or as little of the sports drink as you'd like by varying the amount of drink mix and water so that they remain proportional.
Write a formula that expresses the amount of water (in ounces), nn, needed to make the sports drink using xx grams of drink mix. (That is, write a formula that expresses nn in terms of xx.)
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