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Question
The average typing speed N (in words per minute) after t weeks of lessons is modeled by
. Find the rate at which the typing speed is changing when t = 20 weeks. Round your answer to two decimal places.A) 1.75 words/min/week
B) 2.36 words/min/week
C) 2.85 words/min/week
D) 4.59 words/min/week
E) 5.38 words/min/week
Answer
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