Math Problem Statement
After a certain medicine is ingested, its concentration in the bloodstream changes over time.
The relationship between the elapsed time, [t], in minutes, since the medicine was ingested, and its concentration in the bloodstream, [C_{\text{minute}}(t)], in [\text{mg/L}], is modeled by the following function:
[C_{\text{minute}}(t)=61\cdot (0.96)^{\Large t}]
Complete the following sentence about the hourly rate of change in the medicine concentration. Round your answer to two decimal places.
Every hour, the medicine concentration decays by a factor of [\ ] .
Solution
The given function modeling the concentration of medicine in the bloodstream is:
Here, is the time in minutes, and the base represents the decay factor per minute.
To find the decay factor per hour, we need to convert the minute-based decay factor into an hour-based decay factor. Since there are 60 minutes in an hour, we raise the minute-based decay factor to the power of 60:
Let's calculate this value:
So, every hour, the medicine concentration decays by a factor of approximately 0.28 when rounded to two decimal places.
Would you like more details or have any questions?
Here are 5 relative questions to expand your understanding:
- How would the medicine concentration change after 2 hours?
- What does the decay factor of 0.28 per hour imply about the medicine's effectiveness?
- How would the model change if the medicine concentration increased instead of decreased?
- How could this decay factor be used to determine the best time to administer the next dose?
- What would be the concentration after 30 minutes?
Tip: Exponential decay models are commonly used in pharmacokinetics to describe how drugs are processed in the body over time. Understanding the decay factor helps in dosing schedules.
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Math Problem Analysis
Mathematical Concepts
Exponential Functions
Exponential Decay
Formulas
Exponential decay model: C_minute(t) = 61 * (0.96)^t
Theorems
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Suitable Grade Level
Grades 10-12