Edexcel P1 2022 October — Question 3

Exam BoardEdexcel
ModuleP1 (Pure Mathematics 1)
Year2022
SessionOctober
TopicQuadratic Functions

  1. The share price of a company is monitored.
Exactly 3 years after monitoring began, the share price was \(\pounds 1.05\)
Exactly 5 years after monitoring began, the share price was \(\pounds 1.65\)
The share price, \(\pounds V\), of the company is modelled by the equation $$V = p t + q$$ where \(t\) is the number of years after monitoring began and \(p\) and \(q\) are constants.
  1. Find the value of \(p\) and the value of \(q\). Exactly \(T\) years after monitoring began, the share price was \(\pounds 2.50\)
  2. Find the value of \(T\), according to the model, giving your answer to one decimal place.