Mathematics 0580 · IGCSE · Exponential growth and decay

Exponential growth and decay — practice question

By the close of 2021, there were $27\,000$ rhinos living in the wild. The rhino population is predicted to fall exponentially by $3\%$ each year.
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Work out the number of rhinos predicted to be living in the wild 4 years later, at the end of 2025. Give your answer correct to the nearest whole number.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: Apply the depreciation formula $27000(0.97)^4$

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