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.)
a: b = 6: 10 = 3: 5 = 21: 35
b: c = 21: 33 = 7: 11 = 35: 55
a: b: c = 21: 35: 55
i don't think that there's a unique answer, because it depends on the numbers you choose: for example, if you pick , then you have
but for example, if you if you pick , then you have
even if you wanted to use formula, you can at most solve one variable in terms of the other two:
answer is d. geometric
(a) find a function that gives the amou...