A colony of 10,000 bacteria doubles in size every 35 hours. What will the population be 70 hours from now?
The answer would be 40,000 bacteria at 70 hours.
Explaination: You have 10,000 bacteria when you start out. When you reach 35hrs it will double and become 20,000 bacteria. Then conviently another 35 hours is a total of 70 hours and you will have a total of 40,000 (20,000 * 2) bacteria.