7. IODINE lodine 131 is a radioisotope that is related to nuclear energy, medical diagnostic and treatment procedures, and natural gas production. A scientist is
testing 50 milligrams of lodine 131. The scientist knows that the half-life of
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lodine 131 is about 8.02 days. The function y = 50(3) 502 represents the amount
of lodine 131 remaining in milligrams y after x days.
a. Identify key features.
b. Graph the function.
c. Identify relevant domain and range.