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

Question 46

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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= 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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(a) blured image This expression gives the...

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