Medical Professionals Sometimes Use Iodine-131, a Radioactive Substance, to Diagnose $= e ^ { ( \ln ( 1 / 2 ) / 8 ) t }$

question 61

Essay

Medical professionals sometimes use iodine-131, a radioactive substance, to diagnose certain conditions of the thyroid gland. The formula for the proportion P of iodine-131 remaining in a patient's system t days after receiving the substance is given by P $= e ^ { ( \ln ( 1 / 2 ) / 8 ) t }$ .(a) Find the inverse of this function and explain its meaning.(b) How long does it take for the proportion to drop to 10% of the original dosage?

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Average Lease Cost

The mean expense incurred from leasing agreements, spread over the term of the lease, generally considered for assets such as equipment or real estate.

Sales Volume

The total quantity of products or services sold by a company within a specific period.

Total Expected Cost

The sum of all costs projected to be incurred for a project or production process, including materials, labor, and overhead.

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Expenses that do not change regardless of the level of production or sales activity, such as rent, salaries, and insurance.