Mathematics 0580 · IGCSE · Exponential growth and decay

Exponential growth and decay — practice question

Janna and Kamal each put in $8000. At the end of 12 years, both amounts are $12\,800.
(a(i))[3]

Calculate r.

(a(ii))[3]

Calculate R.

(b)[3]

Find after how many complete years from now the population will first be more than 300000.

Worked solution & mark scheme

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