The answer is D= 77, 77-37=40
Answer:
$182.91
Step-by-step explanation:
136.50 times 0.14 (14%) is 19.11
136.50 times 0.2 (20%) is 27.30
13650+19.11+27.30=182.91
Answer:

Step-by-step explanation:
a) The half-life equation is given by:

b) Using the decay equation we have:

we need to find t when 





Therefore, it will take 4820 years to decay to half the original amount.
I hope it helps you!