
2.2 Checkpoint Exponential Functions: Decay 











6. The amount (in milligrams) of a drug in the body t hours after taking a pill is given by 
. 

a) What is the initial dose given? 
b) What percent of the drug leaves the body each hour? 
c) What is the amount of the drug left after 10 hours? 
d) After how many hours will there be less than 1 milligram left in the body?* 







*NOTE:
Problem #6 is from Connally, HughesHallett, Gleason et al. Functions
Modeling Change. A Preparation for Calculus.

