12. The table shows the average weekly pay of a footballer at a certain club on 1 August 1990 and 1 August 2010.
| Year | 1990 | 2010 |
| Average weekly pay | \(\pounds 2500\) | \(\pounds 50000\) |
The average weekly pay of a footballer at this club can be modelled by the equation
$$P = A k ^ { t }$$
where \(\pounds P\) is the average weekly pay \(t\) years after 1 August 1990, and \(A\) and \(k\) are constants.
a. i. Write down the value of \(A\).
ii. Show that the value of \(k\) is 1.16159 , correct to five decimal places.
b. With reference to the model, interpret
i. the value of the constant \(A\),
ii. the value of the constant \(k\),
Using the model,
c. find the year in which, on 1 August, the average weekly pay of a footballer at this club will first exceed \(\pounds 100000\).