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An artifact was found to have an original amount of Carbon-14 of 32 grams. Approximately how many grams of Carbon-14 remain after 4300 years? Carbon 14 decays at a rate of -0.00012 grams per year.

9.6 grams

19.1 grams

22.4 grams

31.2 grams

 

In Texas, the population of a species of bats is decreasing at a rate of -0.121 per year. The population was 34,000 in 2000. According to the function, A(t) = A0e(kt) , what is the predicted population in 2015?

1,130

5,536

10,130

15,536

 

Choose the correct domain for f(x) = ex -2

(-∞,∞)
(0,∞)
[0,∞)
(-∞,0)

 Feb 9, 2019
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An artifact was found to have an original amount of Carbon-14 of 32 grams. Approximately how many grams of Carbon-14 remain after 4300 years? Carbon 14 decays at a rate of -0.00012 grams per year.

 

 

R =32 x 1/2^(4300/5730)
R =32 x 1/2^(0.7504363)
R =~19.1 grams

 Feb 9, 2019

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