Solve the Problem $y = 8,000 ( 3 ) ^ { - 0.2 t }$

question 116

Multiple Choice

Solve the problem.
-The amount of a radioactive substance present, in grams, at time t in months is given by the formula $y = 8,000 ( 3 ) ^ { - 0.2 t }$ Find the number of grams present in 2 years. If necessary, round to three decimal places.

• A) 4.101
• B) 41.012
• C) 5,155.152
• D) 515.515

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