5. Joe is a locally renowned painter who specializes in large, outdoor murals. Jane, who owns an apartment building and has a spare apartment that generally rents out for $1000 per month, reaches an agreement with Joe by which she will allow him to live rent-free in an empty apartment for the month the mural will take to paint. In addition, she will pay him $3000. Joe purchases $1000 of paint, $500 of brushes and other disposable supplies, and gets to work. What are the tax consequences to Joe?