Question 1
Plutonium has a decay rate of 0.003% per year. Suppose Plutonium is released into the atmosphere each year for 20 years at the rate of 2 pounds per year. What is the total amount of radioactive buildup?
◦ 42.55 pounds
◦ 39.14 pounds
◦ 38.94 pounds
◦ 39.98 pounds
Question 2
The world reserves of oil are about 923 thousand million barrels. In 1990 the world use of oil was 6,600 million barrels and the growth rate for the use of oil was 10%. Assuming that this growth rate continues and that no new reserves are discovered, in what year will the world's reserves of oil be exhausted?
◦ 2022
◦ 2010
◦ 2017
◦ 2012