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Cambridge IGCSE Mathematics practice

exam practice - Understand and apply the concepts of exponential growth and decay, such as in scenarios involving depreciation or changes in population. Knowledge of the constant e is not necessary. - Exponential growth and decay

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2

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3

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Topic

Exponential growth and decay

Exam-style question

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Paper 2Core or Extended Mathematics3 marks

Depreciation of a car

Description

Car Depreciation

A car is bought for $20,000. It depreciates by 15% each year.

  1. a

    Calculate the value of the car after 2 years.

    Aim for approximately 3 distinct marking points.

    [3]

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Maths method check

  • Topic focus: Exponential growth and decay.
  • Question style: structured_mathematics.
  • Reasoning demand: reasoning.
  • Check the operation, notation, units, and final answer form against the question before moving on.

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Paper 2 structured question: Exponential growth and decay

Paper 2Core or Extended Mathematics4 marks

Description

Population Growth

A town has a population of 8,000 people. The population grows by 6% each year.

  1. a

    Calculate the population after 5 years.

    Aim for approximately 4 distinct marking points.

    [4]