Answer:
buy you what? and I don't think this is the right place lol
The reason why the fund uses the budgetary accounts because
it is most likely needed that the funding budget to be approved legally by the
city council in order for the budget funds to be used by the members or people
responsible of handling the budgets.
One typical relationship between time and interest rate would be simple interest rate. It is the most simplest interest rate however it is not used nowadays since it does not account for all cost along the value of the money. For this relationship, interest rate is directly proportional with time.