you desire to have $20,000 in todays purchasing power in 5 years. you estimate that inflation will average 1.5% annually over the next 5 years. you can invest your money in a mutual fund account that you estimate will earn 7% per year. the value of the mutual fund will accumulate over the 5 year period and be paid as a lump sum at the end of 5 years. on a before tax basis what would be your initial investment to achieve your goal?