Question

How do you solve `20^(-6n)+6=55`?

Answer 1

`n=-1/6log_20(49)`
`napprox-.2165`

Explanation:

`20^(-6n)+6=55`

Subtract 6 from each side:
`20^(-6n)=49`

Rewrite as a log:
`log_20(49)=-6n`

`n=-1/6log_20(49)`