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Quick questions on Exponentials and logarithms: e, ln, log laws and modelling - Edexcel A-Level Maths

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Solve 52x=1005^{2x} = 100, giving your answer to three significant figures. [3 marks]
What is q2?
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The model N=50e0.2tN = 50e^{0.2t} gives a population at time tt years. Find tt when N=200N = 200. [3 marks]

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