Question

PLEASE HELP ME!!!!!!!!!!!!!!!!!!The half life of iodine-131 is 5 days. Suppose you receive a 13mCi dose
for cancer treatment. How much would be left after 40 days?
A)1.75mci
B)0.007mci
C)0.05mci
D)2mci

Answer 1

Answer:

.05

Step-by-step explanation:

First line all your numbers up

R= rate

T= time

the decay rate would be .0139

time is 40

initial amount is 13

final amount is .05