Question

The half-life of radioactive strontium-90 is 29 years. In 1960, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones.

a. Write down a function describing the amount of strontium-90 left in a person's bones, t years after the 1960 nuclear test.

b. In what year will only 10% of the original amount absorbed by a person remains?

Answer 1