The population of a city increases by every year. How many years does it take for the population of the city to double?
A bacterial colony’s population doubles every 5 hours. How long does it take to triple? Give the result to the nearest one decimal place.
A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in living trees. To the nearest year, how long ago was the wood for the artifact cut from the tree? Note that the half-life of carbon-14 is 5 730 years.