An accident at a nuclear power plant occurred on February 1, 2000, and left the surrounding area polluted with radioactive material that decays exponentially. The amount still present (in so, safe units) was measured thereafter at bimonthly intervals, as follows:
Month | April | June | August | October | December |
SU | 12.8 | 10.8 | 9.2 | 7.8
| 6.7
|
a. Find the best fit of the form A(t) = A0 • e" for the amount A(t) of radioactive material (in SU) remaining after t months.
b. Suppose it will not be safe for people to return to the area until A = 1 SU. In what month of what year will this occur?
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