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Reiny - Correction

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8 here are two ways to look at it, 1. how many subsets can you form with 3 elements, including the null set (the factor 1), and the set of all elements (the n) -----> 2^3 = 8 or 2. we can use the p in 2 ways, that is, we can either include it or we can not
"Don't forget the other two restrictions, x ≤ 6 and y ≥ 5 so you are looking at the region 21x + 42y ≤ 546 AND x ≤ 6 AND y ≥ 5" should have been Don't forget the other two restrictions, x ≥ 6 and y ≥ 5 so you are looking at the region 21x +

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