Puzzled entrepreneur in headphones scratching head, having doubt, while checking notebook.
One Young Businessman Overwhelmed With His Work, Looking Up Above, Scratching His Head With A
Horizontal shot of college student scratches head, tries remember answer on difficult question, hold
Young troubled male student studying, doing homework, scratch head indecisive and unsure, facing
Difficult task or problems at online work. Surprised african american woman scratches her head and
Thoughtful Young Man Taking Notes on a Notebook While Sitting on a Couch at Home
Puzzled female student scratches head, tries to learn material, has crisp hair, carries spiral noteb
Close up shot of male nerd with dark healthy skin, scratches head, looks in displeasure, tries to re
