It is estimated that the total value of a stamp collection is given by te formula v=44,700+100t^2, where t is the number of years from now.

It is estimated that the total value of a stamp collection is given by te formula v=44,700+100t^2, where t is the number of years from now. If the inflation rate is running continuously at 4%, so that the discontinued present value of an item that will be worth $v in t years time is given by p=ve^(-.04t). The graph has one local minimum. What is the value of t at the local minimum? What is the discontinued value of the collection at the time?