Scenario:

John is a high school senior and an enrolled member of a federally recognized Native American Tribe who lives with his family on the Tribe's reservation lands near the Oregon Coast. Last summer, to save money for college, he worked two part-time jobs. The first was clearing trails on Tribal forest land for his Tribe's natural resources department, for which he was paid a total of $4,000. The second job was lifeguarding at the public pool in the nearby beach town, for which he was paid $7,500.

(It's now tax time, and John needs to figure out how much federal and Oregon income taxes he must pay.)