The Number of Grams Q of a Certain Radioactive Substance $Q = 7,000 e ^ { - 0.1 t }$

question 39

Multiple Choice

The number of grams Q of a certain radioactive substance present after t seconds is given by the equation $Q = 7,000 e ^ { - 0.1 t }$ . How many grams remain after 17 seconds? Please round the answers to the nearest whole.

• A)Q = 1,355 grams
• B)Q = 1,329 grams
• C)Q = 1,536 grams
• D)Q = 1,278 grams
• E)Q = 1,279 grams

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