That would be a valid way of visualizing the argument

For question 5, would it be valid to think of the argument as "if you watch the movie, then you will enjoy it" and the negation as "if you watch a movie, then you may or may not enjoy it" ?

In lawgic, I had the notation as M → E and the negation as M←s→/E

I want to make sure my reasoning is valid

Being an immutable trait doesn't guarantee a suspect class. There could be other considerations that need to be made. The premise states that if you are a suspect class, then you had an immutable trait. Thus SC → I

Your reasoning also doesn't follow contrapositive "lawgic" . Let's say you were correct and I → SC was the stated premise. That would mean that technically /I→SC could exist so /I → /SC isn't a valid contrapositive. You took the opposite instead of the negation.