Jean invests $100 in Year 1 and doubles the amount each year after that (so the investment

Question:

Jean invests $100 in Year 1 and doubles the amount each year after that (so the investment is $100, 200, 400, 800, . . .). If she continues to do this for 10years, and the investment pays 10% annual interest, what is the future worth of her investment at the end of 10 years?