Assignment:
Solve each using Q = Q0 e to the rt power
A radioactive substance decays exponentially, If 500 grams of the substance were present intially and 400 grams are present 50 years later, how many grams will be present after 200 years?
It is estimated that the population of a certain country grows exponentially. If the population was 50 million in 1990 and 80 million in 1995, what will the population be in 2010?
Provide complete and step by step solution for the question and show calculations and use formulas.