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."
the question it's Portugis ,and i translate to english = "<em>How do you speak cobblestone in English?"</em><em> </em> (if you are still confused you can ask your question again).
So there is 3:5 right, so 20 divided by 5 equals 4, there are four 5's in 20. Then 4 multiplied by 3 equals 12. So there are 12 students that has BROWN EYES.
