5-26. (Future value of an annuity) In 20 years you are planning to retire and buy a house in Nevada City, California. The house you are looking at currently costs $150,000 and is expected to increase in value at a rate of 5 percent annually. Assuming you can earn 10 percent annually on your investments, how much must you invest at the end of each of the next 20 years to be able to buy your dream house when you retire