Math 1090
Quiz 25
26 March, 2012
Name:
Instructions: Answer the questions below. Make sure to show all work
clearly.
This quiz has two sides
Carbon-14 has a half-life of 5730 years. If we start with 50g of carbon-14, the amount left
after t years is given by
t
5730
1
C(t) = 50
2
1. (3 points) How much carbon-14 is left after 10,000 years?
2. (3 points) How much is left after 57,300 years?
3. (4 points) Sketch the graph of the amount of carbon-14 remaining on the axes below.
Label the y-intercept and at least two other points.