Question

The price of a stock decreased by 60 cents one week, decreased 10 cents the next week, and decreased another 20 cents the following week. What is the average change in the price of the stock over the three weeks? need to know right now ASAP!! –270 cents per week –90 cents per week –87 cents per week –30 cents per week

Answer 1

Hi there! Hopefully this helps!

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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 = $\frac{-60 -10 -20}{3}$.

(-60 + -10 + -20 = -90). So, to simplify it:

$\frac{-90}{3}$ = -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.