Bill Bengen updates his Safe Withdrawal Rate to 4.7%. What it means for retirees and how long your portfolio can really last.

Discover what exponential growth is, learn how it differs from other growth types, and explore real-life examples like compounding interest and population growth.

Learn how to calculate the present value of various bond types using Excel, including zero-coupon, annuities, and continuous compounding bonds, for informed investing.