Jessica is the simple subject (and really the complete subject also in this case.)
Jim and Bob went to the store.
It is a simple sentence
Simple subject: family Simple predicate: went
A compound subject is when two or more subjects share the same predicate in a sentence. For example, "John and Sarah went to the store." The simple predicate is the main verb in the sentence that shows the action or state of being of the subject. In the example sentence, "went" is the simple predicate.
melt (subject) went (predicate)
Yes, it can have two subjects and only one verb. Marsha and Glenda went to the store.
Robert woke up at 6:00. Marissa went to the store. Mrs. Roberts passed out the homework.
Luis is subject. Went is predicate.
"Mrs. Smith went to the store." Or: "She went to the store." Never "Mrs. Smith she went to the store." The subject of the sentence is "Mrs. Smith" - if you also have "she" then you have the subject in there twice (if this will help you to remember that you only need one of these).
You is the subject, went is the simple predicate, and went to the zoo yesterday is the complete predicate.
Shelia and Jack went to the store.
Yes, pronouns (in this case, "she") can be used as a subject in a sentence. e.g. She went to the store. "She" is the subject.