If a hospital patient is given 50 milligrams of medicine which leaves the bloodstream at 10% per hour, how many milligrams of medicine will remain in the system after 6 hours? Use the function A(t) = Iert.

12.39 mg
27.44 mg
45.24 mg
91.11 mg

when i plug it in i get 50e^.6 and i find the answer is 91.11 but on other sites it's 27.44

Question

If a hospital patient is given 50 milligrams of medicine which leaves the bloodstream at 10% per hour, how many milligrams of medicine will remain in the system after 6 hours? Use the function A(t) = Iert.

12.39 mg
 27.44 mg
 45.24 mg
 91.11 mg

when i plug it in i get 50e^.6 and i find the answer is 91.11 but on other sites it's 27.44

mathmath333 · Answer

the formula is 

$A(t)=le^{rt}\
=$

A=50,r=10,t=6.
$\Large 50=l\times e^{10\times 6}\
\Large l=\dfrac{50}{e^{ 0.6}}\
$

mathmath333 · Answer

http://www.wolframalpha.com/input/?i=l%3D%5Cdfrac%7B50%7D%7Be%5E%7B+0.6%7D%7D

mathmath333 · Answer

wolfram does gives 27.44 , their is typo in ur calculation

anonymous · Answer

oh ok thank you so much , writing the formula down like you did and going through the problem really helped me to get it , thanks a lot

anonymous · Answer

@mathmath333

mathmath333 · Answer

yw