Revenue from gas wells that have been in production for at least 5 years tends to follow a decreasing geometric gradient. One particular rights holder received royalties of $4000 per year for years 1...

Revenue from gas wells that have been in production

for at least 5 years tends to follow a decreasing

geometric gradient. One particular rights holder received

royalties of $4000 per year for years 1 through

6; however, beginning in year 7, income decreased

by 15% per year each year through year 14. Calculate

the future value in year 14 of the royalty income

from the wells provided all of it was invested at 10%

per year