Answer:
the answer is c
Step-by-step explanation:
5/8-3/8 is 1/4 + 2 is 2 1/4 then put into improper fraction
Answer: 11.8
Step-by-step explanation:
To calculate the remaining caffeine, we use the radioactive decay formula which is expressed as An = Aoe^-kt where An is the amount left after t time, Ao is the initial amount and k is a constant we can calculate from the half-life information. We do as follows:
at half-life,
ln 1/2 = -k(6)
k = 0.12/hr
An = 80e^-0.12(14)
An = 15.87 mg