Mathematics, 15.02.2020 20:46, oakleylynn

The 1985 explosion at a nuclear lab sent about 1000 kilograms of a radioactive element into the atmosphere. The function f(x) = 1000(05) describes the amount, f(x), it
years after 1985. If even 100 kilograms of the radioactive element remains in the atmosphere, the area is considered unsafe for human habitation. Find f(40) and determin
f(40)
(Type an integer or a decimal rounded to the nearest tenth as needed.)
Will the area be safe for human habitation by 2025?
A. Yes, because by 2025, the radioactive element remaining in the area is greater than 100 kilograms.
OB. Yes, because by 2025, the radioactive element remaining in the area is less than 100 kilograms
OC. No, because by 2025, the radioactive element remaining in the area is greater than 100 kilograms
OD. No, because by 2025, the radioactive element remaining in the area is less than 100 kilograms
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The 1985 explosion at a nuclear lab sent about 1000 kilograms of a radioactive element into the atmo...