There are many interesting ideas associated with applications of the exponential function. One of them involved world population projections in 1960 by University of Illinois EE Professor Heinz von Foerster, who determined that world population was growing faster than an exponential. Another is growth of monetary capital in interest-bearing accounts, or growth of debt in credit card accounts.
Investigate these and other applications of the exponential via the internet or other sources, and post interesting information for other students to see.