1. Technetium-99m is a drug taken by a patient and then used to study tumors in the brain, lungs and other parts of the body. A patient takes a 1000-mg pill. The data below shows how much active ingredient remains in
the body over 6-hour time intervals.
a) What is the initial value?
Technetium-99m Decay
# of 6-hour time Amount of Drug
intervals
remaining (mg)
0
1000
b) What is the growth/decay factor?
1
500
2
250
3
125
c) Write a rule for the function