def validate_ticket_price(price):
	"""
	validate that the ticket price is between $10 and $100 (inclusive)
	:param price: price of the ticket
	:return: an error message (if any) or nothing if the price is valid
	"""

	errors = []
	if int(price) < 10:
		errors.append("Ticket price must be at least $10")
	if int(price) > 100:
		errors.append("Maximum ticket price is $100")
	return errors