Answer:
56,691.00 which would be 21 payments at 4.1 % compounded quarterly.
84 months in 7 years
÷ 4
= 21
21
×4.1 =
26,691 +
31,000 =
56,691
Answer:
Step-by-step explanation:

Answer: 
Step-by-step explanation:
We know that the general form of the exponential decay formula is
, where y is final amount remaining after t time, A is the original amount and r is the rate of decay
Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident. 
Hence, the ratio of remaining since the nuclear accident is 
X= 270
simplify the equation using cross multiplication