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rafi10
11.03.2020 •
Mathematics
The function f(x) = 3x2 + x + 1 represents the number, in thousands, of wrist bands Lin expects to sell x weeks after opening her shop. What is the average rate of change over the interval 1 ≤ x ≤ 2?
A) 10
B) 5
C) 15
D) -10
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