I was going through some more practice and couldn't understand what I'm supposed to do or how to solve it any help would be awesome thank you!

1. Rewrite log₇151 using base -10 logarithms. Find an approximate answer, rounded to three decimal places.
2. 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-6, 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.

b) Determine the amount of gallium-67 left after 4 days.

c) Solve your equation to determine the time it will take for there to be 1% of the original gallium-67.

3. Describe at least three similarities and three differences between the functions y=10^x and y=log x.