Answer
(~p ᴧ r) → (~q v s)
Work Step by Step
p: I like the teacher.
q: The course is interesting.
r: I miss the class.
s: I spend extra time reading the text book.
If I do not like the teacher and I miss class, then the course is not interesting or I spend extra time reading the textbook.
The symbolic representation is:
(~p ᴧ r) : I do not like the teacher and I miss class.
(~q v s): The course is not interesting, or I spend extra time reading the textbook.
(~p ᴧ r) → (~q v s): If I do not like the teacher and I miss class, then the course is not interesting, or I spend extra time reading the textbook.