Answer: y = 2000(0.78)^t
This is the same as writing [tex]y = 2000(0.78)^t[/tex]
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Explanation:
The answer above is in the form y = a*b^t
a = initial price = 2000 dollars
b = decay factor = 0.78
We have a decay factor because 0 < b < 1 and because the price decreases. The 0.78 is from the computation of 1 - 0.22 = 0.78
Meaning that if the price goes down 22%, then we keep the remaining 78%
So each year, the laptop keeps 78% of its previous price after losing 22%.
