Question

A student in greece discovers a pottery bowl that contains 80% of its orginal amount of c-14

Answer 1

Answer: 1844.648 years old.

Step-by-step explanation:

I assume you want to find how old it is.

Lets assume it was originally 100 units of mass.

using the half life decay function we would get:

80 = 100(0.5)^t/5730

(5730 is the half life of carbon-14)

Solving:

0.8 = 0.5^(t/5730)

Use logs:

and you will get: t ≅ 1844.648 years old.