After T Years, the Remaining Mass Y (In Grams)of 24 $y = 24 \left( \frac { 1 } { 2 } \right) ^ { t / 30 } , t \geq 0$

question 127

Multiple Choice

After t years, the remaining mass y (in grams) of 24 grams of a radioactive elements whose half-life is 30 years is given by $y = 24 \left( \frac { 1 } { 2 } \right) ^ { t / 30 } , t \geq 0$ . How much of the initial mass remains after 50 years? Round your answers to two decimal places.

• A)7.56 grams
• B)14.40 grams
• C)3.17 grams
• D)16.44 grams
• E)nothing remains

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