I.1. it is part (d), since the vertaical asymptote is x=2 and the horizontal asymptote is y=1.
2.a) x belongs ]-infinity,2[ union ]2, infinity[
b) easy
3. a) x is impossible
b) x is less than 2 or x is greater than 3
c) x is less than or equal to 1 or x is greater than or equal to 2.5

4. y is less than 0 or y is greater than 1.25