Question

How do you solve `5^x>=625`?

Answer 1

`x>=4`

Explanation:

recognising the powers of `5`

`5^1=5`

`5^2=25`

`5^3=125`

`5^4=625`

so for

`5^x>=625`

looking at the list we conclude

`x>=4`

note that we require the equal sign