If you need to ask this question you should not be removing palm trees.
at least 60$
Freelance of what kind of job? You charge according to the job description and degree of difficulty
Depending on how old you are and what you teach. For example There are professionals who charge 80$ month (15 days) you should charge 15$/week
Usually you charge about $8-$10, depnding on how many kids you are babysitting.