Question

My teacher didn't explain fully​

Answer 1

Below

Explanation:

The values of x can be from 6 to inf ....the solid dot at six shows that it INCLUDES 6

so x ≥ 6

ALSO 'x' can be 2 or less ( and INCLUDES '2')

so 2 ≥ x

Now combine the two underlined equations above to

2 ≥ x ≥ 6