There are 256 cups of water needed. I hope this helped.
I personally think Natalie's bill is the greatest because $24.25 × 10 =x
Answer:

Step-by-step explanation:
The half life is the amount of time it takes a substance to decay to half of its original amount.
Since the radioactive substance has a half life of 1000 years, there will be half of it left after 1000 years.
So, the fraction that will be left after 1000 years is 
The oldster got a discount, so the original price is higher; let's call it x;



Answer: $14.00
Answer:
Step-by-step explanation:
x^2.x^1
=9^2.9^1
= 9 multiplied by 9
=81
9 multiplied by 1
=9
81 multiplied by nine
=585.198599