Thursday

October 23, 2014

October 23, 2014

Posted by **Andy G** on Monday, March 17, 2014 at 8:58pm.

a. find the rule of the function that gives the amount remaining from an initial quantity of 100 milligrams of carbon14 after t years.

b. the burial cloth of an egyptian mummy i sestimated to contain 59% of the carbon 14 it contained originally. how long ago was the mummy buried?

- PreCalculus -
**Reiny**, Monday, March 17, 2014 at 9:50pmamount = 100 (1/2)^(t/5730)

b)

59 = 100 (.5)^(t/5730)

.59 = .5^(t/5730)

ln .59 = (t/5730) ln (.5)

t/5730 = ln .59/ln .5 = .76121314

t = 4361.75 yrs

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