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zimovet [89]
1 year ago
10

A truck is bought at the price of $67,000. The price decreases at the rate of .30 every year (t). Which equation matches this ex

ponential model?A) f(t) = 67(.70)tB) f(t) = 70(67,000)tC) f(t) = t(.70)67,000D) f(t) = 67,000(.70)t

Mathematics
1 answer:
chubhunter [2.5K]1 year ago
8 0

Data:

Initial price: $67.000

Price decrease: .30 each year t

The general form of a model of exponential decrease is:

f(t)=p_0(1-r)^t

Where P0 is the initial price, r is the rate of decrease and t the number of periods.

Then, for the given situation you get the next equation:

\begin{gathered} f(t)=67000(1-0.30)^t \\ f(t)=67000(.70)^t \end{gathered}Then, the answer is the option D.
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