In this question, you are given multiple number names and asked to add it. To answer this question it would be easier to split the description into a different part like this: 1. "18 tens" mean 18 * 10= 180 2. "20 ones" mean 20 *1= 20
The second from the top is the correct answer because it's baiscally saying the same thing, that x has to be greater than or equal to 8. The one on the very top, which you picked is saying that x is going to be less than or equal to x, which is not correct.