Edexcel IALMathematicsGeneral Applications9 Marks
The value of a car, $V$, in pounds, can be modelled by the equation $V = A\mathrm{e}^{-kt}$, where $t$ is the age of the car in years, and $A$ and $k$ are positive constants. When the car is new, its value is £20 000. When the car is 5 years old, its value is £12 000.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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