What is the Optimal Way to Display a Single Management Fee Rate on Slides for a 10-Year Fund?

What is the best way to present management fees as a single number on slides? For example we want to front-load the fees for our 10Y fund at 3.5% for the active investment period (3 years) and then drop them to 1%. Average over 10years comes to 1.75%. What would be the management fee rate that goes on the slides?