Your friend Alice got her first part-time job as a cashier in February and has earned $6,250 so far this year. In April, she also started working as a babysitter for some of her neighbors, who pay her in cash. She has earned $900 from this job. Alice knows that you have been learning about taxes in your personal finance lessons and asks you, "Do I need to file taxes this year? If I do, what is the process like?"