Alfred Bush

Mathematics

8 December, 05:08

Carbon-14 has a half-life of approximately 5400 years

(a) Find a function that gives the amount, A, of carbon-14 in an object after t years. (Use the variable a to represent the initial amount).

(b) A leaf is found that contains 25% of the carbon-14 it originally had. Approximately how old is it? (Round your answer to the nearest year.)