[填空题]
Melinda has 300000 in a private foundation. Each year she6 gcyj) (6uxjh 3ngzt /o0 rmqs.mq0h;donates 10% of the money remaining in her private foundationo sq0n/.mr3zq ;mt0h g to charity.
1.Find the maximum number of years Melinda can donate to charity while keeping at least 100000 in the private foundation.
Hence the maximum number of years is .
Bill invests $400000 in a bank account that pays a nominal interest rate of 4 %, compounded quarterly, for ten years.
2.Calculate the value of Bill's investment at the end of this time. Give your answer correct to the nearest dollar.
FV≈ .
