In a certain culture of bacteria, the number of bacteria increased sixfold in 10 hours. How long does it take for the population to double

The population of a city is tripling every 15.8 years. If its current population is 35.2, in thousands, what will be its approximate population 2.6 years from now, in thousands?

A population is now 40 million and is expected to double in 25 years. How many years will the population be three times the present

The number of people infected with coronavirus doubles every 3.0 days. How many days does it take for the U.S. to go from one case (patient zero) to all 330,000,000 Americans being infected.

The half-life of Radium-226 is 1590 years. If a sample contains 100 mg, how many mg will remain after 3000 years?

A fish population starts at 15000. The (annual) birth rate is 0.4; the (annual) death rate is 0.3. In addition, 1500 fish are stocked each year, and 2000 are caught and removed from the population each year. Determine the size of the population after 1 year and 2 years Answer to the nearest 1.

You have 160 grams of a substance. If it has a half life of 8 days, how much will be left after 32 days?

The population of Mickey Village is 48,000 today.  Every other year the population increases by 1,550 people.  In approximately how many years will the population exceed 70,000 people?

A tumor doubles in size every 5 months. If the initial size of the tumor is 12 cells, how many cells will there be in 6 years?