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It decreased by 30 cents per week.
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The average rate of change is calculated as:
the ratio of the sum of the change in the three weeks divided by the number of weeks. (The number of weeks being 3)
Rate of change = [tex]\frac{-60 -10 -20}{3}[/tex].
(-60 + -10 + -20 = -90). So, to simplify it:
[tex]\frac{-90}{3}[/tex] = -30
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Incase you are confused:
Since the average rate of change is negative, this means that the stock price has decreased.
Answer:
The stock decreased by 30 cents per week.
Step-by-step explanation:
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