Answer:
3 independent clauses
Step-by-step explanation:
Independent clauses is defined as a group of word that consists of a subject as well as a verb. And the group of words should always express a complete though. An independent clause is a full sentence with a meaning containing verb and a subject.
In the context, the sentence contains 3 independent clauses:
-- I didn't have homework
Here, 'I' is the subject and 'didn't' is the verb.
-- I went to the mall
Here, 'I' is the subject and 'went' is the verb.
-- I forgot to study
Here, 'I' is the subject and 'forgot' is the verb.