Suppose that the amount of algae in a pong doubles every 6 hours. If the pond initially contains 70 pounds of algae, how much algae will be in the pond after 18 hours?

Answer 1

After 6 hours, the pond will contain 70 * 2 = 140 pounds of algae.
After another 6 hours (12 hours total), the pond will contain 140 * 2 = 280 pounds of algae.
After another 6 hours (18 hours total), the pond will contain 280 * 2 = 560 pounds of algae.

Therefore, there will be 560 pounds of algae in the pond after 18 hours.