Please help just real quick!!
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?
the answer choices is:
A) 720 pounds
B) 360 pounds
C) 1,440 pounds
D) 114 pounds
It's 720
Right.
Is it C??
No.
90
4 hrs >> 180
8 hrs >> 360
12 hrs >> ?
To solve this problem, we need to determine how many times the initial amount of algae doubles in the given time period.
We know that the algae doubles every 4 hours. Therefore, in 12 hours, it will double 12 / 4 = 3 times.
Initially, there are 90 pounds of algae. After the first 4 hours, it will double to 90 * 2 = 180 pounds. After the second 4 hours, it will double again to 180 * 2 = 360 pounds. Finally, after the third 4 hours, it will double one more time to 360 * 2 = 720 pounds.
Therefore, after 12 hours, there will be 720 pounds of algae in the pond.
The correct answer is A) 720 pounds.