Answer :
hi
May I see the picture of the question?
ok
[tex]\text{ A }\cap\text{ D = }\lbrace7,\text{ 9}\rbrace[/tex]2.-
[tex]\begin{gathered} \text{ x + 1 }\ge\text{ 2 2x - 8 > 2} \\ \text{ x }\ge\text{ 2 -1 2x > 2 + 8} \\ \text{ x }\ge\text{ 1 2x > 10} \\ \text{ x > 10/5} \\ \text{ x > 2} \end{gathered}[/tex]It's not the second one [1, infinity)