Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours?
(1 point)
Responses
720 pounds
720 pounds
360 pounds
360 pounds
1,440 pounds
1,440 pounds
114 pounds
The amount of algae in the pond doubles every 4 hours. Therefore, after 4 hours, there will be 90*2 = 180 pounds of algae in the pond.
After another 4 hours, the amount of algae will double again, resulting in 180*2 = 360 pounds.
After another 4 hours, the amount of algae will double again, resulting in 360*2 = 720 pounds.
Therefore, after 12 hours, there will be 720 pounds of algae in the pond. The correct answer is 720 pounds.