susannaking72 susannaking72 19-01-2021 Mathematics contestada Over the last 80 years, the average annual U.S. inflation rate was about a. 3.6 percent, implying that prices have increased 16-fold. b. 4 percent, implying that prices have increased 17-fold. c. 4 percent, implying that prices have increased 16-fold. d. 3.6 percent, implying that prices increased about 17-fold.