Answer:
B: 8(N - 17) = 30
Explanation:
Since the wording multiplies the difference by 8, the appropriate choice is B.
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A: "the difference of the product eight times a number and seventeen" It is less ambiguous if you can word it as "the difference of seventeen and the product of 8 and a number is negative 30".
C: "The difference of eight times a number and seventeen times the same number is thirty."