It isn't a real test. I do believe it helps you with your grade and the classes you'll take next year.
No because its explain how much cumulative tip total on day 5 so the answer is D.400
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
The values of 
and 
are 
and 
, respectively.
In this question we need to solve the linear equation for each point, first for 
and later for 
.
If we know that , then the value of is:
If we know that and , then the value of is:
The values of and are and , respectively.
To learn more on linear functions, we kindly invite to check this question: brainly.com/question/5101300
Answer:
-2.66666666667
or just
-2.67
Step-by-step explanation:
