Question

Somebody explain pls!!!!!

Answer 1

Explanation:

Using log properties

`log_(7)(rz {}^(12) )`

`log_(7)(r) + log_(7)(z {}^(12) )`

Then

`log_(7)(r) + 12 log_(7)(z)`

Plug in the knowns

`- 7.87 + 12( - 12.59)`

`- 158.95`