Question: 6. Rewrite log, 151 using base-10 logarithms. Find an approximate answer, rounded to three decimal places. (2 marks) 7. Gallium-67 is used in nuclear medicine

6. Rewrite log, 151 using base-10 logarithms. Find an approximate answer, rounded to three decimal places. (2 marks) 7. Gallium-67 is used in nuclear medicine to help doctors locate inflammation and chronic infections. The patient is injected with a tracer (trace amount) that includes gallium-67, which collects in areas of inflammation and infection. The gallium-67 emits radiation that a special camera can detect. Gallium-67 has a half-life of 3.26 days. a. Give an exponential equation to represent the percentage of the original gallium-67 after t days. (2 marks) b. Determine the amount of gallium-67 left after 4 days. (2 marks) c. Determine the time, to the nearest day, that it will take for there to be 1% of the original gallium-67 left. (2 marks)

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