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Growth and Decay
What does the model tell you — and what can you find from it?
Scientific calculator required
Aa
Exponential modelling — substitute and evaluate, interpret parameters in context, find unknown constants, and (at A-Level/Level 4) rearrange using natural logarithms.
Each scenario presents a real-world exponential model and asks you to work through it step by step.
Core Maths
3 sub-questions per scenario
A-Level
Adds ln rearrangement
Level 4
Engineering contexts
Worked Example
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Worked Example — Exponential Models
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