Question 262904
If we look at the function L(x), wee see it is a quartic function. This means that THe end behavior is 
+ and - infinity. More specifically it is increasing and decreasing between 0 <= t < =5. If we are taking a medication, we would expect its potency and level of mg to be a maximum at t = 0 and decrease over time. 
---
It seems to me that the equation would have to be changed to match that.