Question

How do you solve `4^ { x + 4} = 5`?

Answer 1

`x = (log 5)/(log 4) - 4`

Explanation:

Take logs of both sides:
`log(4^(x+4)) = log 5`

Bring the power down in front of the log:
`(x+4) log 4 = log 5`

Divide both sides by log 4 and subtract 4