Multiple Choice
Solve the problem.
-A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is 
In how many years will there be 90% of the isotope left?
A) 527 years
B) 1000 years
C) 500 years
D) 246 years
Correct Answer:
Verified
Correct Answer:
Verified
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