Pre-Calculus Question of the Day

Test your knowledge with a hand-picked multiple-choice question.

The amount of phosphorus present in a sample at a given time is given by the following equation:

$Q(t)=Q_$0e^{-0.03t}$$

Where is in days, is the amount of phosphorus after days, and is the initial amount of phosphorus at the beginning of the first day. What percent of the initial amount of phosphorus is left after days of decay?

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