Answer
(p ∨ q) → ~r
Work Step by Step
p : I like the Teacher.
q: The course is interesting.
r: I miss the class.
If I like the teacher or the course is interesting, then I do not miss class.
The symbolic representation is:
p ∨ q: I like the teacher or the course is interesting.
(p ∨ q) → ~r: If I like the teacher or the course is interesting, then I do not miss class.