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13 March, 14:59

The relationship between women's whole-number shoe sizes and foot length forms an arithmetic sequence, where an is the foot length in inches that corresponds to a shoe size of n. A women's size 3 fits a foot 8 inches long and women's size 7 fits a foot 91 3 inches long. What is the common difference of the arithmetic sequence?

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  1. 13 March, 15:16
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    Answer: 1/3, just took the quiz
  2. 13 March, 15:27
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    part 1 - 1/3

    part 2 - a. n = 22/3 + (n-1) 1/3

    part 3 - size 12
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