Edexcel Mathematics October 2020 · Paper 1 · Question 8 · ExamRizz

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October 2020 · Paper 1 · Question 8 · 2 marks

8. A new smartphone was released by a company. The company monitore d the total number of phones sold, n, at time t days after the phone was released. The company observed that, during this time, the rate of increase of n was proportional to n Use this information to write down a suitable equation for n in terms of t. (You do not need to evaluate any unknown constants in your equation .) (2) 21

Lesson: Exponential Functions and Their Graphs