Please Help! Suppose that the amount of algae in a pond doubles every 6 hours. If the pond initially contains 50 pounds of algae, how much algae will be in the pond after 18 hours?
A. 400
B. 10,800
C. 300
D. 600
I think it's A: 400
So we start out at 50 and double every 6 hours till 18 hours
1st 6th hour: 100
2nd 6th hours(12 hours): 200
3rd 6th hours(18 hours):400
So at 18 hours there would be 400 pounds of algae

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

Idon't know the answer