This math topic focuses on solving for the initial value in continuous exponential decay scenarios, especially when the time units between the rate of decay and the observation period are mismatched. The problems involve various real-world applications such as declining populations of birds or whales, decay of radioactive material, and reductions in toxin concentrations. Each question requires the rearrangement of the exponential decay formula to find the starting amount or concentration, given the percentage decline over a specified period and the value at the end of that period.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
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