Question

How do I do this?

Answer 1

The Half-Life Formula is:
A= A0 (1/2) ^t/h

A= amount left after time t
Asubzero = initial amount
t=time
h=half life.

Asubzero= 80mg of caffeine
t=(plug in values from question)
h= 5 hours

now you just plug in t=5 and t=10 and solve for how many mg of caffeine simon has in his system after time passes