Euler's Number - Sponsored by Andrew Jackson
In many applications, the most convenient base is the irrational number 𝑒=2.71828182845… 
You should memorize this number to at least 20 decimal places (just kidding. Memorize it to…zero decimal places)
Let's briefly visit Desmos to make sure we know how to do 𝑒−3 and 𝑒2.5
To graph:
𝑓𝑥=𝑒𝑥                                                                  𝑔𝑥=𝑒−𝑥