6 times a number, x, is at least 22.

6 times a number, x, is at least 22.

6 times a number x:
6x

The phrase is at least means greater than or equal to. So we have an inequality:
6x >= 22 <-- This is our algebraic expression

To solve this for x, paste this into the search engine and we get:
x >= 3.666667