a number x less than 5 is at least 15

Answer 1

Hello, thank you for taking the time to post your question!

The first step here is to set up the inequality based on the underlying information. That means

(5 – x) >= 15

Then you can solve for x

-x >= 10

x <= -10

I hope that helps get you moving in the right direction! Feel free to reach out if you have any additional questions beyond that :)

Answer 2

15 < 5-x

5-x > 15

-x > 10

x < -10

x is in the interval (-infinity, -10]

Answer 3

At least = equal to or greater than

5 - x ≥ 15