HELP_PLEASE!!!
The half – life of Carbon-14 is 5715 years. Find the rate of decay for Carbon –14. Bones of a prehistoric man were discovered in 1985 and contained 5% of the original amount of carbon – 14. How long ago did the man die?
Answers:
(A) 285 years ago
(B) 1084 years ago
(C)5776 years ago
(D) 24,964 years ago
.

Question

HELP_PLEASE!!!
The half – life of Carbon-14 is 5715 years.  Find the rate of decay for Carbon –14.  Bones of a prehistoric man were discovered in 1985 and contained 5% of the original amount of carbon – 14.  How long ago did the man die?
Answers:
    (A) 285 years ago 
    (B) 1084 years ago 
    (C)5776 years ago 
    (D) 24,964 years ago 
.

anonymous · Answer

does anyone know how to solve this>????????

anonymous · Answer

@uvas123 do u know how to solve this>????

anonymous · Answer

im thinking...

anonymous · Answer

it is definately not a

anonymous · Answer

do you know what it is @timo86m >????

anonymous · Answer

im sorry my guess would be either b or c

anonymous · Answer

http://dwb4.unl.edu/Chem/CHEM869Z/CHEM869ZLinks/www.all.mq.edu.au/online/edu/egypt/carbdate.htm