I'll try my best, but I am a little rusty!
Domain (D) is all possible x values
Range (R) is all possible y values
I don't know how your teacher taught you how to write the values, but here is how I do it
7. D: { all real numbers}, R: {-3 ≤ y ≤ 2}
8. D { -1 ≤ y } or { -1 ≤ y ≤ ∞ }, R: all real numbers
9. D: {2}. R: all real numbers
10: D: all real numbers, R: {-4}
11. D: {-2 ≤ x < 5}, R: {-2 ≤ y ≤ 1}
12: D: {-4 ≤ x ≤ 5}, R: {-3 ≤ y ≤ 5}
13 D: { -∞ ≤ y < 2 }, R: {-∞ ≤ y < 0}
14: D: {-2 ≤ x ≤ ∞}, R: {-4 ≤ y ≤ ∞}
Hope I helped! Message me if you have any questions or concerns! :)
]
